{"id":7512,"date":"2026-01-29T15:10:32","date_gmt":"2026-01-29T14:10:32","guid":{"rendered":"https:\/\/q3-energie.de\/pv-connection-technology-products-firefighter-switches-generator-junction-boxes-ac-dc-boxes\/ac-box-for-pv-systems-up-to-630-a\/"},"modified":"2026-11-06T09:40:06","modified_gmt":"2026-11-06T08:40:06","slug":"ac-box-for-pv-systems-up-to-630-a","status":"publish","type":"page","link":"https:\/\/q3-energie.de\/en\/products\/ac-box-for-pv-systems-up-to-630-a\/","title":{"rendered":"AC Box for solar PV up to 630 A"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull\" style=\"min-height:603px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"700\" class=\"wp-block-cover__image-background wp-image-2028 size-full\" alt=\"Wand Hintergrund\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Wand_Hintergrund.webp\" data-object-fit=\"cover\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Wand_Hintergrund.webp 1920w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Wand_Hintergrund-300x109.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Wand_Hintergrund-1024x373.webp 1024w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Wand_Hintergrund-768x280.webp 768w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Wand_Hintergrund-1536x560.webp 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-60 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-columns alignfull are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-5b0bc1de wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:0;padding-right:var(--wp--preset--spacing--50);padding-bottom:0;padding-left:var(--wp--preset--spacing--50);flex-basis:65%\">\n<h1 class=\"wp-block-heading has-text-align-left has-nv-text-dark-bg-color has-text-color has-large-font-size\">AC Box for Solar PV Systems \u2013 AC Connection Boxes up to 630 A<\/h1>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left has-nv-text-dark-bg-color has-text-color\" style=\"font-size:18px\"><strong>Project-Specific AC Connection Solutions for Commercial and Industrial PV Systems \u2013 Compliant with EN 61439. <\/strong><\/h2>\n\n\n\n<div style=\"height:9px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons has-custom-font-size has-x-large-font-size is-horizontal is-layout-flex wp-block-buttons-is-layout-flex\" style=\"padding-top:0;padding-bottom:0\">\n<div style=\"--wp--block-button--width: 50;\" class=\"wp-block-button is-style-primary animated fadeInLeft has-custom-width wp-block-button__width wp-block-button__width-50\"><a class=\"wp-block-button__link has-border-color has-nv-site-bg-border-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"#Produkt-und-Einsatzbereich-Projektspezifische-AC-Anschlusstechnik\" style=\"border-width:2px;border-top-left-radius:4px;border-top-right-radius:4px;border-bottom-left-radius:4px;border-bottom-right-radius:4px;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--20)\">Q3 AC Box \u2013 Product Overview and Applications \u2192<\/a><\/div>\n\n\n\n<div style=\"--wp--block-button--width: 50;\" class=\"wp-block-button is-style-secondary animated fadeInLeft delay-100ms has-custom-width wp-block-button__width wp-block-button__width-50\"><a class=\"wp-block-button__link has-border-color has-nv-site-bg-border-color has-medium-font-size has-custom-font-size wp-element-button\" style=\"border-width:2px;border-top-left-radius:4px;border-top-right-radius:4px;border-bottom-left-radius:4px;border-bottom-right-radius:4px;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--20)\">AC Box Variants and Technical Specifications \u2192<\/a><\/div>\n\n\n\n<div style=\"--wp--block-button--width: 50;\" class=\"wp-block-button is-style-secondary animated fadeInLeft delay-200ms has-custom-width wp-block-button__width wp-block-button__width-50\"><a class=\"wp-block-button__link has-border-color has-nv-site-bg-border-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/products\/project-inquiry\/project-inquiry-ac-box-configuration-for-your-pv-project\/\" style=\"border-width:2px;border-top-left-radius:4px;border-top-right-radius:4px;border-bottom-left-radius:4px;border-bottom-right-radius:4px;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--20)\">Enquire About an AC Connection Box \u2192<\/a><\/div>\n\n\n\n<div style=\"--wp--block-button--width: 50;\" class=\"wp-block-button is-style-primary animated fadeInLeft delay-500ms has-custom-width wp-block-button__width wp-block-button__width-50\"><a class=\"wp-block-button__link has-border-color has-nv-site-bg-border-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"hhttps:\/\/q3-energie.de\/en\/downloads\/ac-connection-box-datasheets-and-technical-documentation\/\" style=\"border-width:2px;border-top-left-radius:4px;border-top-right-radius:4px;border-bottom-left-radius:4px;border-bottom-right-radius:4px;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--20)\">AC Connection Box Technical Data \u2192<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px.webp\" alt=\"AC connection box for connection to grid transfer point\/transformer. Network type TN-C. 4x busbar 30 x 10 CU. Inverter input for cable 4 x 300 mm\u00b2 via M80 brass cable gland to 4 busbar terminals. Output to transformer for cable 4 x 300 mm\u00b2 via M80 brass cable gland to 4 busbar terminals (both cables to be installed on-site). Additional connection option for cable 1 x 300 mm\u00b2 to 1 busbar terminal. Surge protection T1+2 (standard Citel DAC1-13S-30-275 Imax 50kA, Iimp 12.5kA) including short-circuit protection SFD1-13S-30 for AC SPD T1 (12.5kA 10\/350\u00b5s). Remote signaling contact connection via M16 plastic (cable to be installed on-site). M20 membrane. Enclosure galvanized sheet steel with hardened polyester coating 800x600x300 mm with door. High voltage warning label.           \" class=\"wp-image-2029\" style=\"width:400px;height:auto\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-rank-math-toc-block q3-toc has-neve-link-color-color has-text-color has-link-color wp-elements-1\" id=\"rank-math-toc\"><h2>On this page<\/h2><nav><ul><li class=\"\"><a href=\"#projektspezifische-ac-anschlusstechnik-fur-gewerbliche-und-industrielle-photovoltaikanlagen-normkonform-nach-en-61439\">Project-Specific AC Connection Solutions for Commercial and Industrial PV Systems \u2013 Compliant with EN 61439. <\/a><\/li><li class=\"\"><a href=\"#Produkt-und-Einsatzbereich-Projektspezifische-AC-Anschlusstechnik\">Product Overview and Applications<\/a><\/li><li class=\"\"><a href=\"#ac-box-fur-photovoltaik-sichere-einspeisung-zum-netz\">AC Box for Photovoltaics \u2013 Safe Grid Feed-In<\/a><\/li><li class=\"\"><a href=\"#ac-box-varianten-von-160-a-bis-630-a\">AC Box Variants from 160 A to 630 A<\/a><\/li><li class=\"\"><a href=\"#technische-eckdaten-auf-einen-blick\">Key Technical Specifications at a Glance<\/a><\/li><li class=\"\"><a href=\"#schalt-und-schutztechnik-der-q-3-ac-box\">Switching and Protection Equipment in the Q3 AC Box<\/a><\/li><li class=\"\"><a href=\"#Netzformen-und-Anschusskonzept-AC-Box\">Earthing Arrangements and Connection Design<\/a><\/li><li class=\"\"><a href=\"#projektspezifische-auslegung\">QFire BIG PV Firefighter Switch: Cluster Technology for Large PV Systems<\/a><\/li><li class=\"\"><a href=\"#entwicklung-fertigung-und-prufung\">Cluster Control Box for Centralised Shutdown of Distributed PV Arrays<\/a><\/li><li class=\"\"><a href=\"#haufige-fragen-zur-ac-anschlussbox\">Frequently Asked Questions About AC Connection Boxes<\/a><\/li><li class=\"\"><a href=\"#projektanfrage-ac-anschlussbox\">AC Connection Box Project Request<\/a><\/li><li class=\"\"><a href=\"#technische-unterlagen-ac-box\">Technical Documentation AC Box<\/a><\/li><li class=\"\"><a href=\"#produkte-ac-anschlusstechnik\">Products AC Boxes<\/a><\/li><li class=\"\"><a href=\"#q-3-dc-anschlusstechnik\">Q3 DC Connection Technology<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<h2 id=\"Produkt-und-Einsatzbereich-Projektspezifische-AC-Anschlusstechnik\" class=\"wp-block-heading\">Product Overview and Applications<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Project-Specific AC Connection Solutions for Commercial and Industrial PV Systems<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The Q3 AC Box combines the AC outputs of PV inverters and provides a connection to the downstream low-voltage distribution system. Depending on project requirements, we integrate NH fuse-switch disconnectors, busbar systems, surge protection and the necessary connection components. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Available in ratings from 160 A to 630 A \u2013 designed, manufactured and tested in Germany.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">AC Box for Solar PV \u2013 Safe Grid Feed-In<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:16px\">The Q3 AC Box provides a safe, standards-compliant connection between PV inverters and the grid connection point or transformer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As a high-performance AC connection box, it provides the following functions:<\/p>\n\n\n\n<div class=\"wp-block-columns alignwide are-vertically-aligned-top has-neve-link-color-color has-text-color has-link-color wp-elements-2 is-layout-flex wp-container-core-columns-is-layout-0fb72d45 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-vertically-aligned-top dc-card is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20);flex-basis:33.34%\">\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-26de122b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-e148e5c0 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-e5099da3\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M1765.051,0H34.949C17.561,0,3.466,14.095,3.466,31.484v476.753c0,17.389,14.095,31.483,31.483,31.483 h1730.102c17.389,0,31.484-14.095,31.484-31.483V31.484C1796.535,14.095,1782.439,0,1765.051,0z M1733.567,476.753H66.433V62.968 h1667.134V476.753z\"><\/path><path d=\"M511.707,1260.279H34.954c-17.389,0-31.484,14.1-31.484,31.484v476.753 c0,17.394,14.095,31.483,31.484,31.483h476.753c17.389,0,31.483-14.09,31.483-31.483v-476.753 C543.19,1274.379,529.096,1260.279,511.707,1260.279z M480.223,1737.033H66.438v-413.786h413.786V1737.033z\"><\/path><path d=\"M1138.377,1260.279H661.624c-17.389,0-31.484,14.1-31.484,31.484v476.753 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C931.484,607.788,917.389,593.693,900,593.693z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 id=\"grosse-industrie-und-gewerbedacher\" class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-3\" style=\"font-size:16px\"><strong><strong><strong>Consolidation of high AC currents<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top dc-card is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20);flex-basis:33.34%\">\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-26de122b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-e148e5c0 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-4d68249d\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M1094.819,1135.051l-108.863-17.528c-9.449-34.07-22.999-66.744-40.445-97.562l64.601-89.408 c8.963-12.402,7.593-29.477-3.227-40.295l-97.074-97.083c-10.828-10.832-27.9-12.188-40.297-3.227l-89.409,64.601 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c13.902,6.404,30.387,1.77,38.919-10.938l50.042-74.512c27.695,4.257,55.781,5.375,83.777,3.288l44.076,78.161 c5.656,10.036,16.176,15.863,27.151,15.863c3.601,0,7.253-0.626,10.792-1.936l108.469-40.06 c14.357-5.301,22.738-20.238,19.785-35.253l-17.307-88.039c22.611-16.589,43.206-35.657,61.535-56.96l86.451,24.104 c14.74,4.092,30.282-3.088,36.684-16.985l48.363-105.006C1784.404,606.769,1779.777,590.28,1767.072,581.748z M1684.125,675.479 l-80.555-22.459c-12.275-3.409-25.378,0.97-33.118,11.08c-21.507,28.091-47.402,52.06-76.968,71.245 c-10.688,6.932-16.08,19.664-13.619,32.161l16.124,82.021l-58.651,21.664l-41.059-72.815c-5.574-9.884-16.002-15.859-27.143-15.859 c-1.361,0-2.735,0.087-4.113,0.27c-34.727,4.623-70.428,3.214-104.798-4.109c-12.445-2.656-25.269,2.535-32.37,13.111 l-46.624,69.418l-56.772-26.147l22.455-80.555c3.418-12.267-0.966-25.382-11.08-33.122c-28.092-21.503-52.06-47.398-71.245-76.963 c-6.927-10.685-19.655-16.072-32.161-13.619l-82.012,16.119l-21.664-58.651l72.811-41.058 c11.093-6.257,17.264-18.629,15.585-31.252c-4.636-34.957-3.253-70.214,4.113-104.793c2.653-12.458-2.539-25.273-13.106-32.374 l-69.427-46.62l26.155-56.777l80.551,22.459c12.264,3.405,25.383-0.97,33.123-11.084c21.48-28.073,47.38-52.042,76.971-71.245 c10.685-6.931,16.076-19.664,13.615-32.161l-16.123-82.012l58.651-21.664l41.058,72.81c6.254,11.093,18.615,17.272,31.257,15.589 c34.727-4.609,70.419-3.209,104.798,4.113c12.44,2.648,25.264-2.539,32.369-13.11l46.62-69.432l56.773,26.151l-22.456,80.563 c-3.418,12.271,0.971,25.387,11.084,33.123c28.065,21.481,52.034,47.372,71.232,76.958c6.936,10.685,19.668,16.059,32.156,13.62 l82.029-16.12l21.664,58.647l-72.818,41.058c-11.094,6.258-17.264,18.629-15.585,31.252c4.64,34.97,3.257,70.228-4.114,104.793 c-2.66,12.458,2.531,25.277,13.106,32.378l69.432,46.62L1684.125,675.479z\"><\/path><path d=\"M1324.474,212.717c-31.026,0-61.63,5.492-90.97,16.329c-135.858,50.172-205.564,201.52-155.392,337.383 c37.927,102.701,136.95,171.707,246.409,171.716c0.009,0,0.009,0,0.018,0c31.014,0,61.617-5.492,90.952-16.329 c135.854-50.172,205.568-201.52,155.396-337.375C1532.951,281.727,1433.928,212.717,1324.474,212.717z M1393.896,663.338 c-22.402,8.275-45.736,12.467-69.357,12.467c0,0-0.009,0-0.014,0c-83.477-0.004-159.005-52.638-187.936-130.971 c-38.266-103.619,14.898-219.048,118.514-257.311c22.398-8.275,45.736-12.467,69.37-12.467 c83.478,0,159.001,52.638,187.936,130.979C1550.672,509.646,1497.503,625.071,1393.896,663.338z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 id=\"mehrere-dachbereiche\" class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-4\" style=\"font-size:16px\"><strong><strong><strong><strong>Integration of NH load break switches<\/strong><\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns alignwide are-vertically-aligned-top has-neve-link-color-color has-text-color has-link-color wp-elements-5 is-layout-flex wp-container-core-columns-is-layout-0fb72d45 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-vertically-aligned-top dc-card is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20);flex-basis:33.33%\">\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-26de122b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-e148e5c0 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-091f5e18\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M900,1793.016c-2.796,0-5.594-0.375-8.315-1.125c-7.969-2.199-197.36-55.807-388.728-226.607 c-112.377-100.305-201.914-220.375-266.128-356.88c-79.987-170.042-120.543-365.937-120.543-582.248 c0-9.624,4.431-18.711,12.016-24.637L880.752,13.613c11.308-8.837,27.187-8.837,38.496,0l752.451,587.905 c7.584,5.925,12.016,15.013,12.016,24.637c0,216.312-40.559,412.206-120.546,582.248 c-64.212,136.505-153.751,256.575-266.123,356.88c-191.37,170.801-380.764,224.408-388.732,226.607 C905.592,1792.641,902.796,1793.016,900,1793.016z M178.88,641.351c3.271,367.343,125.555,661.791,363.594,875.387 C701.154,1659.123,862.076,1716.81,900,1729.049c37.924-12.239,198.846-69.926,357.525-212.311 c238.039-213.597,360.325-508.044,363.592-875.387L900,77.925L178.88,641.351z\"><\/path><path d=\"M900,1593.533c-2.798,0-5.594-0.375-8.315-1.125c-6.189-1.71-153.319-43.35-301.636-175.734 c-87.095-77.732-156.485-170.791-206.251-276.582c-61.928-131.65-93.328-283.236-93.328-450.545 c0-9.624,4.432-18.711,12.017-24.637L880.752,213.1c11.308-8.834,27.187-8.839,38.496,0l578.266,451.81 c7.585,5.925,12.017,15.013,12.017,24.637c0,167.309-31.399,318.895-93.329,450.545 c-49.762,105.791-119.155,198.85-206.248,276.582c-148.316,132.385-295.446,174.024-301.64,175.734 C905.596,1593.158,902.798,1593.533,900,1593.533z M353.087,704.725c3.256,278.249,96.237,501.402,276.493,663.417 c118.248,106.279,238.227,150.755,270.42,161.38c32.193-10.625,152.172-55.101,270.42-161.38 c180.256-162.016,273.236-385.169,276.495-663.417L900,277.412L353.087,704.725z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 id=\"erweiterbare-pv-projekte\" class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-6\" style=\"font-size:16px\"><strong><strong><strong>Overcurrent protection and selectivity<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top dc-card is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20);flex-basis:33.34%\">\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-26de122b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-e148e5c0 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-21fe45eb\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M770.8,796.605v265.968c0,71.216,57.939,129.154,129.154,129.154c71.209,0,129.148-57.938,129.157-129.154 l-0.009-265.964c0-71.215-57.93-129.154-129.148-129.154C828.739,667.456,770.8,725.39,770.8,796.605z M966.08,796.609 l0.009,265.96c-0.009,36.469-29.672,66.138-66.135,66.138c-36.464,0-66.133-29.669-66.133-66.134V796.605 c0-36.465,29.668-66.129,66.133-66.129C936.417,730.476,966.08,760.145,966.08,796.609z\"><\/path><path d=\"M899.954,1231.867c-71.566,0-129.787,58.221-129.787,129.787c0,71.572,58.221,129.796,129.787,129.796 c71.569,0,129.791-58.224,129.791-129.796C1029.744,1290.088,971.522,1231.867,899.954,1231.867z M899.954,1428.43 c-36.816,0-66.766-29.954-66.766-66.775c0-36.816,29.95-66.767,66.766-66.767c36.814,0,66.768,29.95,66.768,66.767 C966.722,1398.476,936.768,1428.43,899.954,1428.43z\"><\/path><path d=\"M1790.452,1630.839L927.246,135.725c-5.635-9.75-16.037-15.755-27.292-15.755 c-11.258,0-21.659,6.004-27.29,15.755L8.344,1632.76c-5.627,9.751-5.627,21.761,0,31.511c5.631,9.75,16.032,15.755,27.29,15.755 h1728.644c0.037,0.004,0.063,0.004,0.089,0c17.4,0,31.511-14.106,31.511-31.51 C1795.877,1641.964,1793.882,1635.881,1790.452,1630.839z M90.21,1617.004L899.954,214.5l809.745,1402.503H90.21z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 id=\"mehrere-wechselrichtern-mpp-tracker\" class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-7\" style=\"font-size:16px\"><strong><strong><strong>Surge protection Type 1+2 (optionally expandable)<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns alignwide are-vertically-aligned-top has-neve-link-color-color has-text-color has-link-color wp-elements-8 is-layout-flex wp-container-core-columns-is-layout-0fb72d45 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-vertically-aligned-top dc-card is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20);flex-basis:33.34%\">\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-26de122b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-e148e5c0 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-25e0223e\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M357.063,742.307c-17.305,0-31.331,14.026-31.331,31.331s14.026,31.331,31.331,31.331 c27.835,0,93.081,33.661,93.081,98.938c0,17.305,14.026,31.331,31.331,31.331s31.332-14.026,31.332-31.331 C512.807,797.809,411.417,742.307,357.063,742.307z\"><\/path><path d=\"M1453.625,177.815c27.835,0,93.08,33.661,93.08,98.938c0,17.305,14.027,31.331,31.332,31.331 s31.331-14.026,31.331-31.331c0-106.097-101.39-161.6-155.743-161.6c-17.305,0-31.33,14.026-31.33,31.331 S1436.32,177.815,1453.625,177.815z\"><\/path><path d=\"M1447.975,1261.85c-46.434,0-92.324,12.361-132.713,35.751c-31.903,18.476-58.501,42.634-79.293,70.451 L597.875,998.547c3.899-9.809,7.317-19.871,10.075-30.226c15.53-58.261,10.889-118.681-12.702-173.188l636.708-368.71 c49.41,69.459,130.26,111.727,216.465,111.727c46.433,0,92.319-12.361,132.707-35.75c61.316-35.505,105.136-92.766,123.385-161.232 c18.248-68.463,8.742-139.933-26.764-201.249C1630.467,58.27,1542.422,7.544,1447.979,7.544c-46.434,0-92.324,12.361-132.712,35.75 c-115.368,66.811-161.543,207.81-113.322,328.1L563.833,740.916c-49.707-66.172-128.52-106.219-212.417-106.219 c-46.428,0-92.324,12.361-132.711,35.75C92.13,743.749,48.787,906.358,122.084,1032.934 c47.281,81.649,135.326,132.37,229.77,132.37c46.438,0,92.324-12.36,132.712-35.75c33.473-19.381,61.679-45.284,83.407-75.915 l636.673,368.684c-31.921,74.42-29.608,162.465,13.996,237.764c47.28,81.65,135.325,132.371,229.774,132.371 c46.432,0,92.318-12.361,132.707-35.75c61.316-35.506,105.135-92.766,123.384-161.232c18.249-68.463,8.742-139.934-26.763-201.249 C1630.463,1312.575,1542.418,1261.85,1447.975,1261.85z M1346.668,97.521c30.859-17.868,65.893-27.314,101.311-27.314 c72.164,0,139.426,38.745,175.543,101.114c27.117,46.831,34.378,101.42,20.438,153.71c-13.935,52.29-47.403,96.026-94.233,123.144 c-30.855,17.869-65.889,27.314-101.307,27.314c-72.165,0-139.43-38.744-175.547-101.109 C1216.893,277.706,1249.994,153.504,1346.668,97.521z M453.164,1075.327c-30.859,17.868-65.888,27.314-101.311,27.314 c-72.165,0-139.426-38.745-175.543-101.11c-55.979-96.672-22.873-220.874,73.795-276.857 c30.859-17.869,65.888-27.314,101.311-27.314c72.165,0,139.426,38.744,175.543,101.114c27.117,46.831,34.377,101.42,20.438,153.71 C533.464,1004.474,499.995,1048.209,453.164,1075.327z M1643.955,1579.336c-13.934,52.291-47.402,96.027-94.233,123.145 c-30.854,17.868-65.888,27.314-101.306,27.314c-72.166,0-139.431-38.744-175.548-101.109 c-55.979-96.674-22.878-220.875,73.795-276.859c30.859-17.867,65.893-27.313,101.312-27.313 c72.164,0,139.425,38.744,175.543,101.114C1650.635,1472.457,1657.895,1527.047,1643.955,1579.336z\"><\/path><path d=\"M1453.621,1369.459c-17.305,0-31.331,14.027-31.331,31.332s14.026,31.331,31.331,31.331 c27.834,0,93.08,33.661,93.08,98.937c0,17.305,14.027,31.332,31.332,31.332s31.33-14.027,31.33-31.332 C1609.363,1424.963,1507.975,1369.459,1453.621,1369.459z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 id=\"komplexe-anlagenstrukturen\" class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-9\" style=\"font-size:16px\"><strong><strong><strong><strong>Standards-compliant PEN separation for TN-C \/ TN-C-S<\/strong><\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top dc-card is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20);flex-basis:33.33%\">\n<div class=\"wp-block-group\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-26de122b wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-e148e5c0 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-5ecccffc\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M1709.277,268.688h-515.642c1.962-7.174,3.1-14.691,3.1-22.48v-74.93c0-47.103-38.321-85.424-85.424-85.424 H688.688c-47.103,0-85.423,38.321-85.423,85.424v74.93c0,7.789,1.137,15.306,3.1,22.48H90.723 c-47.103,0-85.424,38.321-85.424,85.424v659.412c0,47.103,38.321,85.424,85.424,85.424h43.563c-1.962,7.179-3.1,14.691-3.1,22.48 v507.295c0,47.103,38.321,85.424,85.424,85.424H1583.39c47.103,0,85.424-38.321,85.424-85.424v-507.295 c0-7.789-1.137-15.302-3.1-22.48h43.563c47.103,0,85.424-38.321,85.424-85.424V354.111 C1794.701,307.009,1756.38,268.688,1709.277,268.688z M1433.147,1036.004v62.943v54.413c0,12.395-10.085,22.479-22.479,22.479 h-47.959c-12.395,0-22.48-10.085-22.48-22.479v-54.413v-62.943v-92.919c0-12.395,10.086-22.479,22.48-22.479h47.959 c12.395,0,22.479,10.085,22.479,22.479V1036.004z M666.209,246.208v-74.93c0-12.395,10.085-22.48,22.479-22.48h422.623 c12.395,0,22.479,10.085,22.479,22.48v74.93c0,12.395-10.085,22.48-22.479,22.48H688.688 C676.294,268.688,666.209,258.602,666.209,246.208z M688.688,331.631h422.623h243.902v526.408 c-43.599,3.815-77.929,40.473-77.929,85.046v92.919H522.71v-92.919c0-44.573-34.33-81.23-77.933-85.046V331.631H688.688z M459.767,1098.947v54.413c0,12.395-10.085,22.479-22.479,22.479h-47.959c-12.395,0-22.48-10.085-22.48-22.479v-54.413v-62.943 v-92.919c0-12.395,10.085-22.479,22.48-22.479h47.959c12.395,0,22.479,10.085,22.479,22.479v92.919V1098.947z M90.723,1036.004 c-12.395,0-22.479-10.086-22.479-22.48V354.111c0-12.395,10.085-22.48,22.479-22.48h291.111v526.408 c-43.599,3.815-77.929,40.473-77.929,85.046v92.919H216.61H90.723z M1605.87,1121.428v507.295c0,12.395-10.086,22.48-22.48,22.48 H216.61c-12.395,0-22.48-10.086-22.48-22.48v-507.295c0-12.396,10.085-22.48,22.48-22.48h87.294v54.413 c0,47.103,38.321,85.424,85.424,85.424h47.959c47.102,0,85.423-38.321,85.423-85.424v-54.413h754.575v54.413 c0,47.103,38.321,85.424,85.424,85.424h47.959c47.103,0,85.423-38.321,85.423-85.424v-54.413h87.299 C1595.784,1098.947,1605.87,1109.032,1605.87,1121.428z M1731.757,1013.523c0,12.395-10.085,22.48-22.479,22.48H1583.39h-87.299 v-92.919c0-44.573-34.33-81.23-77.933-85.046V331.631h291.119c12.395,0,22.479,10.085,22.479,22.48V1013.523z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 id=\"erhohte-sicherheitsanforderungen\" class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-10\" style=\"font-size:16px\"><strong><strong>Designed for Commercial and Industrial PV Systems<\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<h3 class=\"wp-block-heading has-text-align-center\" id=\"q-fire-big-auf-einen-blick\">Q3 AC Boxes at a Glance<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes ref-project-card\"><table><tbody><tr><td><strong>Application<\/strong><\/td><td>Commercial and industrial PV systems, large rooftop installations and high-capacity inverter systems<\/td><\/tr><tr><td><strong>Function<\/strong><\/td><td>Combining and protecting the AC outputs of PV inverters<\/td><\/tr><tr><td><strong><strong>Rated Current<\/strong><\/strong><\/td><td>160 A, 250 A, 400 A or 630 A<\/td><\/tr><tr><td><strong><strong>Earthing Arrangements<\/strong><\/strong><\/td><td>TN-C and TN-C-S<\/td><\/tr><tr><td><strong><strong>Busbar System<\/strong><\/strong><\/td><td>Copper, sized to suit project requirements<\/td><\/tr><tr><td><strong><strong>Switching and Protection Equipment<\/strong><\/strong><\/td><td><br>NH fuse-switch disconnectors, upstream fuse protection and a project-specific selectivity concept<\/td><\/tr><tr><td><strong><strong>Surge protection<\/strong><\/strong><\/td><td>Available for project-specific integration, e.g. Type 1+2 SPDs or extended protection arrangements<\/td><\/tr><tr><td><strong>Enclosure \/ degree of protection<\/strong><\/td><td>IP66, suitable for indoor and sheltered outdoor applications<\/td><\/tr><tr><td><strong>Applicable standards<\/strong><\/td><td>EN 61439<\/td><\/tr><tr><td><strong>Design and Configuration<\/strong><\/td><td>Project-specific design based on rated current, earthing arrangement, short-circuit withstand capability, selectivity and distribution network operator requirements<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignwide is-layout-grid wp-container-core-group-is-layout-9d260ee2 wp-block-group-is-layout-grid\">\n<figure class=\"wp-block-image size-full q3-duotone\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/AC-Box-Ueberspannungsschutz-NH-Trenner.webp\" alt=\"AC Box with Surge Protection and NH Fuse Switch Disconnectors\" class=\"wp-image-5659\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/AC-Box-Ueberspannungsschutz-NH-Trenner.webp 400w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/AC-Box-Ueberspannungsschutz-NH-Trenner-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/AC-Box-Ueberspannungsschutz-NH-Trenner-150x150.webp 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full q3-duotone\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"801\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/250-A-AC-Anschlussbox-mit-Ueberspannungsschutz-T1-2-TN-S-800px.webp\" alt=\"250 A AC connection box with surge protection T1-2 TN-S\" class=\"wp-image-5404\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/250-A-AC-Anschlussbox-mit-Ueberspannungsschutz-T1-2-TN-S-800px.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/250-A-AC-Anschlussbox-mit-Ueberspannungsschutz-T1-2-TN-S-800px-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/250-A-AC-Anschlussbox-mit-Ueberspannungsschutz-T1-2-TN-S-800px-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/05\/250-A-AC-Anschlussbox-mit-Ueberspannungsschutz-T1-2-TN-S-800px-768x769.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full q3-duotone\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px.webp\" alt=\"AC connection box for connection to grid transfer point\/transformer. Network type TN-C. 4x busbar 30 x 10 CU. Inverter input for cable 4 x 300 mm\u00b2 via M80 brass cable gland to 4 busbar terminals. Output to transformer for cable 4 x 300 mm\u00b2 via M80 brass cable gland to 4 busbar terminals (both cables to be installed on-site). Additional connection option for cable 1 x 300 mm\u00b2 to 1 busbar terminal. Surge protection T1+2 (standard Citel DAC1-13S-30-275 Imax 50kA, Iimp 12.5kA) including short-circuit protection SFD1-13S-30 for AC SPD T1 (12.5kA 10\/350\u00b5s). Remote signaling contact connection via M16 plastic (cable to be installed on-site). M20 membrane. Enclosure galvanized sheet steel with hardened polyester coating 800x600x300 mm with door. High voltage warning label.           \" class=\"wp-image-2029\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full q3-duotone\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box_offen_transparent.webp\" alt=\"AC Surge Box with SPD DEHN 941 405 Type T1 &amp; T2. In busbar enclosure MI6457. 2 x cable glands for 5 x 95mm cable M63. 2xM25 glands for PE. Busbars for TN-S with 10 connection terminals for up to 120mm. Ventilation flange. NH disconnector 3 x 160 A. Contact protection on busbars of L1,2,3. Wall bracket Z profile Mi MS 2.       \" class=\"wp-image-2031\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box_offen_transparent.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box_offen_transparent-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box_offen_transparent-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box_offen_transparent-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full q3-duotone\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/250-A-AC-Anschlussbox-TN-C-mit-NH-Trenner-800-px.webp\" alt=\"250 A AC connection box (inverter - grid transfer point). 1 inverter input. Standard TN-C, option TN-S to inverter section. Coating: C4 (outdoor). Inverter busbar terminals: inverter terminal 95\u2013120 mm\u00b2 \u2013 required: 5 units. Grid transfer point busbar terminals: grid transfer point terminal 95\u2013120 mm\u00b2 \u2013 required: 5 units. Surge protection T1+T2: TN\u2013S - 3+1 (L\u2013N + N\u2013PE). Remote signals: SPD failure, NH-OFF (potential-free). Cable entries inverter: \u2022 Inverter M75 (\u00d8 42\u201355 mm) \u00d7 1 Cable entry grid transfer point: \u2022 Grid transfer point M75 (\u00d8 42\u201355 mm) \u00d7 1 M20 membrane for signals\/service.        \" class=\"wp-image-2030\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/250-A-AC-Anschlussbox-TN-C-mit-NH-Trenner-800-px.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/250-A-AC-Anschlussbox-TN-C-mit-NH-Trenner-800-px-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/250-A-AC-Anschlussbox-TN-C-mit-NH-Trenner-800-px-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/250-A-AC-Anschlussbox-TN-C-mit-NH-Trenner-800-px-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full q3-duotone\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/07\/Q3-SurgeBox-TN-S-Compact.webp\" alt=\"Q3 SurgeBox TN-S Compact Surge Protection Box TN-S SPD Type 1+2+3 TN-S\" class=\"wp-image-8914\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/07\/Q3-SurgeBox-TN-S-Compact.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/07\/Q3-SurgeBox-TN-S-Compact-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/07\/Q3-SurgeBox-TN-S-Compact-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/07\/Q3-SurgeBox-TN-S-Compact-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover alignfull\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\" id=\"AC-Box-Varianten-und-technische-Eckdaten\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-text-color-background-color has-background-dim-100 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-columns has-neve-link-color-color has-text-color has-link-color wp-elements-11 is-layout-flex wp-container-core-columns-is-layout-0fb72d45 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-vertically-aligned-bottom has-nv-site-bg-color has-text-color has-link-color wp-elements-12 is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50);flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-5b0bc1de wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<h2 class=\"wp-block-heading has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-13\">AC Box Variants from 160 A to 630 A<\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-table ticss-b64683f3 is-style-regular\"><table class=\"has-nv-site-bg-color has-neve-text-color-background-color has-text-color has-background has-link-color\" style=\"border-top-style:none;border-top-width:0px;border-bottom-style:none;border-bottom-width:0px;border-left-style:none;border-left-width:0px\"><tbody><tr><td><strong>AC Box 160 A<\/strong><\/td><td>Compact AC connection solution for lower-capacity PV systems, providing a standards-compliant connection to the low-voltage network.<\/td><\/tr><tr><td><strong>AC Box 250 A<\/strong><\/td><td>High-performance AC connection box for commercial PV projects, with project-specific upstream fuse protection and selectivity coordination.<\/td><\/tr><tr><td><strong>AC Box 400 A<\/strong><\/td><td>Robust AC distribution assembly for combining high AC currents in industrial photovoltaic installations.<\/td><\/tr><tr><td><strong>AC Box 630 A<\/strong><\/td><td>High-current AC connection box for industrial grid connection points, featuring NH fuse-switch disconnectors and optional integrated surge protection.<\/td><\/tr><tr><td>Project-Specific Configuration<\/td><td>Busbar dimensions, NH fuse size, SPD configuration and cable entries are adapted to the requirements of each project.<\/td><\/tr><tr><td>Other Configurations<\/td><td>Custom configurations available on request<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>The application examples are provided for guidance only. Actual suitability depends on the electrical design and operating conditions. <\/em><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<h2 class=\"wp-block-heading has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-14\">Key Technical Specifications at a Glance<\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-table ticss-b64683f3 is-style-regular\"><table class=\"has-nv-site-bg-color has-neve-text-color-background-color has-text-color has-background has-link-color\" style=\"border-top-style:none;border-top-width:0px;border-bottom-style:none;border-bottom-width:0px;border-left-style:none;border-left-width:0px\"><tbody><tr><td><strong>Rated Current Options<\/strong><\/td><td>160 A \/ 250 A \/ 400 A \/ 630 A<\/td><\/tr><tr><td><strong>Earthing Arrangements<\/strong><\/td><td>TN-C \/ TN-C-S<\/td><\/tr><tr><td><strong>Busbar System<\/strong><\/td><td>Copper, sized to suit project requirements<\/td><\/tr><tr><td><strong>Switching Devices<\/strong><\/td><td>NH Fuse-Switch Disconnectors<\/td><\/tr><tr><td>Surge protection<\/td><td>Available for project-specific integration<\/td><\/tr><tr><td>PEN Disconnection Point<\/td><td>Tool-operated arrangement, where specified<\/td><\/tr><tr><td>Enclosure<\/td><td>IP66<\/td><\/tr><tr><td>Applicable standards<\/td><td>EN 61439<\/td><\/tr><tr><td>Manufacturing<\/td><td>Germany<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons alignwide is-layout-flex wp-block-buttons-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div style=\"--wp--block-button--width: 100;\" class=\"wp-block-button is-style-secondary has-custom-width wp-block-button__width wp-block-button__width-100\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/products\/project-inquiry\/qfire-pv-firefighter-switch\/\" style=\"border-width:1px\">Enquire About an AC Box for My Project \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Switching and Protection Equipment in the Q3 AC Box<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The technical configuration is tailored to the requirements of each project. Switching devices, protective components and current-carrying systems are selected to suit the specific electrical operating conditions. <\/p>\n\n\n\n<div class=\"wp-block-cover alignfull\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" class=\"wp-block-cover__image-background wp-image-387 size-full\" alt=\"Super Multi Box DC Combiner f\u00fcr Freifeld und Agri PV mit Zentralwechselrichter - patentierte L\u00f6sung inklusive PV String Fehler Diskriminator und Feuerwehrschalter. Kundenspezifisch gebaut.\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/01\/Super_Multi_Box_800px.webp\" style=\"object-position:10% 85%\" data-object-fit=\"cover\" data-object-position=\"10% 85%\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/01\/Super_Multi_Box_800px.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/01\/Super_Multi_Box_800px-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/01\/Super_Multi_Box_800px-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/01\/Super_Multi_Box_800px-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-nv-text-dark-bg-background-color has-background-dim-100 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-columns alignwide has-neve-link-color-color has-text-color has-link-color wp-elements-15 is-layout-flex wp-container-core-columns-is-layout-915739b4 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:var(--wp--preset--spacing--30);padding-bottom:0;padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-vertically-aligned-stretch has-neve-text-color-color has-text-color has-link-color wp-elements-16 is-layout-flow wp-block-column-is-layout-flow\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;border-left-style:none;border-left-width:0px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40);flex-basis:100%\">\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-9a2fe9a9\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M900,1793.016c-2.796,0-5.594-0.375-8.315-1.125c-7.969-2.199-197.36-55.807-388.728-226.607 c-112.377-100.305-201.914-220.375-266.128-356.88c-79.987-170.042-120.543-365.937-120.543-582.248 c0-9.624,4.431-18.711,12.016-24.637L880.752,13.613c11.308-8.837,27.187-8.837,38.496,0l752.451,587.905 c7.584,5.925,12.016,15.013,12.016,24.637c0,216.312-40.559,412.206-120.546,582.248 c-64.212,136.505-153.751,256.575-266.123,356.88c-191.37,170.801-380.764,224.408-388.732,226.607 C905.592,1792.641,902.796,1793.016,900,1793.016z M178.88,641.351c3.271,367.343,125.555,661.791,363.594,875.387 C701.154,1659.123,862.076,1716.81,900,1729.049c37.924-12.239,198.846-69.926,357.525-212.311 c238.039-213.597,360.325-508.044,363.592-875.387L900,77.925L178.88,641.351z\"><\/path><path d=\"M900,1593.533c-2.798,0-5.594-0.375-8.315-1.125c-6.189-1.71-153.319-43.35-301.636-175.734 c-87.095-77.732-156.485-170.791-206.251-276.582c-61.928-131.65-93.328-283.236-93.328-450.545 c0-9.624,4.432-18.711,12.017-24.637L880.752,213.1c11.308-8.834,27.187-8.839,38.496,0l578.266,451.81 c7.585,5.925,12.017,15.013,12.017,24.637c0,167.309-31.399,318.895-93.329,450.545 c-49.762,105.791-119.155,198.85-206.248,276.582c-148.316,132.385-295.446,174.024-301.64,175.734 C905.596,1593.158,902.798,1593.533,900,1593.533z M353.087,704.725c3.256,278.249,96.237,501.402,276.493,663.417 c118.248,106.279,238.227,150.755,270.42,161.38c32.193-10.625,152.172-55.101,270.42-161.38 c180.256-162.016,273.236-385.169,276.495-663.417L900,277.412L353.087,704.725z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong>Busbars and Protection Against Direct Contact<\/strong><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br>The busbar system is fitted with a transparent protective cover to prevent accidental contact with live parts. The cover also allows visual inspection of the components. <\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-3601b5c1\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M899.996,6.911C405.643,6.911,3.458,409.103,3.458,903.462C3.458,1397.811,405.643,1800,899.996,1800 c494.357,0,896.546-402.189,896.546-896.538C1796.542,409.103,1394.353,6.911,899.996,6.911z M899.996,1737.1 c-459.667,0-833.637-373.97-833.637-833.638c0-459.679,373.969-833.649,833.637-833.649c459.672,0,833.644,373.971,833.644,833.649 C1733.64,1363.13,1359.668,1737.1,899.996,1737.1z\"><\/path><path d=\"M1073.088,393.764v66.982c176.77,69.347,302.257,241.646,302.257,442.716 c0,262.101-213.239,475.332-475.349,475.332c-262.101,0-475.336-213.231-475.336-475.332 c0-201.075,125.491-373.374,302.261-442.725v-66.973c-212.139,72.23-365.162,273.421-365.162,509.698 c0,296.781,241.452,538.234,538.238,538.234c296.79,0,538.251-241.453,538.251-538.234 C1438.247,667.194,1285.223,466.002,1073.088,393.764z\"><\/path><path d=\"M900.004,880.287c17.371,0,31.45-14.084,31.45-31.451V286.086c0-17.371-14.079-31.451-31.45-31.451 c-17.37,0-31.45,14.08-31.45,31.451v562.749C868.554,866.202,882.634,880.287,900.004,880.287z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong>NH Fuse-Switch Disconnectors<\/strong><\/strong><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br>Integrated NH fuse-switch disconnectors provide safe isolation of the AC side. The configuration is determined according to the project&#8217;s rated current and short-circuit requirements. <\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-542398ec\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M770.8,796.605v265.968c0,71.216,57.939,129.154,129.154,129.154c71.209,0,129.148-57.938,129.157-129.154 l-0.009-265.964c0-71.215-57.93-129.154-129.148-129.154C828.739,667.456,770.8,725.39,770.8,796.605z M966.08,796.609 l0.009,265.96c-0.009,36.469-29.672,66.138-66.135,66.138c-36.464,0-66.133-29.669-66.133-66.134V796.605 c0-36.465,29.668-66.129,66.133-66.129C936.417,730.476,966.08,760.145,966.08,796.609z\"><\/path><path d=\"M899.954,1231.867c-71.566,0-129.787,58.221-129.787,129.787c0,71.572,58.221,129.796,129.787,129.796 c71.569,0,129.791-58.224,129.791-129.796C1029.744,1290.088,971.522,1231.867,899.954,1231.867z M899.954,1428.43 c-36.816,0-66.766-29.954-66.766-66.775c0-36.816,29.95-66.767,66.766-66.767c36.814,0,66.768,29.95,66.768,66.767 C966.722,1398.476,936.768,1428.43,899.954,1428.43z\"><\/path><path d=\"M1790.452,1630.839L927.246,135.725c-5.635-9.75-16.037-15.755-27.292-15.755 c-11.258,0-21.659,6.004-27.29,15.755L8.344,1632.76c-5.627,9.751-5.627,21.761,0,31.511c5.631,9.75,16.032,15.755,27.29,15.755 h1728.644c0.037,0.004,0.063,0.004,0.089,0c17.4,0,31.511-14.106,31.511-31.51 C1795.877,1641.964,1793.882,1635.881,1790.452,1630.839z M90.21,1617.004L899.954,214.5l809.745,1402.503H90.21z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong>Surge protection<\/strong><\/strong><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br>Optional or integrated Type 1+2+3 surge protective devices (SPDs) to protect inverters and downstream equipment.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-2e5d2c76\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M900,868.536c-113.664,0-206.139,92.473-206.139,206.145c0,72.752,38.923,140.217,100.683,177.107v167.979 h210.914v-167.979c61.764-36.891,100.689-104.355,100.689-177.107C1106.146,961.009,1013.669,868.536,900,868.536z M960.627,1204.401l-18.129,8.493v143.914h-84.996v-143.914l-18.129-8.493c-50.148-23.487-82.554-74.403-82.554-129.721 c0-78.952,64.232-143.185,143.181-143.185c78.952,0,143.189,64.232,143.189,143.185 C1043.189,1129.998,1010.782,1180.914,960.627,1204.401z\"><\/path><path d=\"M1306.793,621.365V406.939c-1.094-107.793-43.891-208.955-120.511-284.855 C1109.604,46.13,1007.934,4.301,899.996,4.301c-107.933,0-209.604,41.83-286.273,117.788 c-76.617,75.896-119.413,177.057-120.507,285.166v112.333h62.958V407.571c1.898-187.646,156.137-340.313,343.822-340.313 c187.696,0,341.942,152.667,343.839,339.996v214.11H888.52H192.564v474.124c1.906,187.453,76.336,363.382,209.578,495.369 C535.485,1722.948,712.296,1795.7,900.004,1795.7c187.708,0,364.519-72.752,497.863-204.843 c133.242-131.987,207.668-307.916,209.568-495.693V621.365H1306.793z M1544.477,1094.848 c-3.561,351.735-292.671,637.894-644.472,637.894c-351.796,0-640.912-286.158-644.482-637.577v-410.84h237.693h813.578h237.684 V1094.848z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong><strong>Enclosure and Degree of Protection<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br>The AC Box is available with an IP66-rated enclosure, suitable for indoor and outdoor installation.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-center q3-boxenmacher has-neve-link-hover-color-color has-text-color has-link-color wp-elements-17 wp-block-paragraph\">Q3. The Box Makers. <\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading alignwide\" id=\"Netzformen-und-Anschusskonzept-AC-Box\">Earthing Arrangements and Connection Design<\/h2>\n\n\n\n<h3 class=\"wp-block-heading alignwide\">AC Boxes for TN-C and TN-C-S Systems<\/h3>\n\n\n\n<p class=\"alignwide wp-block-paragraph\">The Q3 AC Box can be designed for different grid connection arrangements. The design takes account of the earthing arrangement, neutral and protective conductor configuration, and the required switching and protection functions. <\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-5d10b5f4\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M900,1793.016c-2.796,0-5.594-0.375-8.315-1.125c-7.969-2.199-197.36-55.807-388.728-226.607 c-112.377-100.305-201.914-220.375-266.128-356.88c-79.987-170.042-120.543-365.937-120.543-582.248 c0-9.624,4.431-18.711,12.016-24.637L880.752,13.613c11.308-8.837,27.187-8.837,38.496,0l752.451,587.905 c7.584,5.925,12.016,15.013,12.016,24.637c0,216.312-40.559,412.206-120.546,582.248 c-64.212,136.505-153.751,256.575-266.123,356.88c-191.37,170.801-380.764,224.408-388.732,226.607 C905.592,1792.641,902.796,1793.016,900,1793.016z M178.88,641.351c3.271,367.343,125.555,661.791,363.594,875.387 C701.154,1659.123,862.076,1716.81,900,1729.049c37.924-12.239,198.846-69.926,357.525-212.311 c238.039-213.597,360.325-508.044,363.592-875.387L900,77.925L178.88,641.351z\"><\/path><path d=\"M900,1593.533c-2.798,0-5.594-0.375-8.315-1.125c-6.189-1.71-153.319-43.35-301.636-175.734 c-87.095-77.732-156.485-170.791-206.251-276.582c-61.928-131.65-93.328-283.236-93.328-450.545 c0-9.624,4.432-18.711,12.017-24.637L880.752,213.1c11.308-8.834,27.187-8.839,38.496,0l578.266,451.81 c7.585,5.925,12.017,15.013,12.017,24.637c0,167.309-31.399,318.895-93.329,450.545 c-49.762,105.791-119.155,198.85-206.248,276.582c-148.316,132.385-295.446,174.024-301.64,175.734 C905.596,1593.158,902.798,1593.533,900,1593.533z M353.087,704.725c3.256,278.249,96.237,501.402,276.493,663.417 c118.248,106.279,238.227,150.755,270.42,161.38c32.193-10.625,152.172-55.101,270.42-161.38 c180.256-162.016,273.236-385.169,276.495-663.417L900,277.412L353.087,704.725z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong>TN-C<\/strong><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br><strong>An earthing arrangement in which the protective earth and neutral functions are combined in a single PEN conductor within the relevant section of the electrical installation.<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-755c3b54\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M900,1793.016c-2.796,0-5.594-0.375-8.315-1.125c-7.969-2.199-197.36-55.807-388.728-226.607 c-112.377-100.305-201.914-220.375-266.128-356.88c-79.987-170.042-120.543-365.937-120.543-582.248 c0-9.624,4.431-18.711,12.016-24.637L880.752,13.613c11.308-8.837,27.187-8.837,38.496,0l752.451,587.905 c7.584,5.925,12.016,15.013,12.016,24.637c0,216.312-40.559,412.206-120.546,582.248 c-64.212,136.505-153.751,256.575-266.123,356.88c-191.37,170.801-380.764,224.408-388.732,226.607 C905.592,1792.641,902.796,1793.016,900,1793.016z M178.88,641.351c3.271,367.343,125.555,661.791,363.594,875.387 C701.154,1659.123,862.076,1716.81,900,1729.049c37.924-12.239,198.846-69.926,357.525-212.311 c238.039-213.597,360.325-508.044,363.592-875.387L900,77.925L178.88,641.351z\"><\/path><path d=\"M900,1593.533c-2.798,0-5.594-0.375-8.315-1.125c-6.189-1.71-153.319-43.35-301.636-175.734 c-87.095-77.732-156.485-170.791-206.251-276.582c-61.928-131.65-93.328-283.236-93.328-450.545 c0-9.624,4.432-18.711,12.017-24.637L880.752,213.1c11.308-8.834,27.187-8.839,38.496,0l578.266,451.81 c7.585,5.925,12.017,15.013,12.017,24.637c0,167.309-31.399,318.895-93.329,450.545 c-49.762,105.791-119.155,198.85-206.248,276.582c-148.316,132.385-295.446,174.024-301.64,175.734 C905.596,1593.158,902.798,1593.533,900,1593.533z M353.087,704.725c3.256,278.249,96.237,501.402,276.493,663.417 c118.248,106.279,238.227,150.755,270.42,161.38c32.193-10.625,152.172-55.101,270.42-161.38 c180.256-162.016,273.236-385.169,276.495-663.417L900,277.412L353.087,704.725z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong>TN-C-S<\/strong><\/strong><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br><strong>An earthing arrangement in which the combined PEN conductor is separated into individual protective earth (PE) and neutral (N) conductors at the designated point.<\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n<p class=\"alignwide wp-block-paragraph\"><em>For further information on the differences between TN-C, TN-S and TN-C-S earthing arrangements, please refer to <a href=\"https:\/\/www.baunetzwissen.de\/elektro\/fachwissen\/planungsgrundlagen\/netzsysteme-152966\" target=\"_blank\" rel=\"noopener\">BauNetz Wissen \u2013 Netzsysteme.<\/a><\/em><\/p>\n\n\n\n<p class=\"alignwide wp-block-paragraph\">Depending on the earthing arrangement, the PEN disconnection point, surge protection and connection components are configured in accordance with the applicable technical and standards requirements.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"391\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box-Schaltplan.webp\" alt=\"AC Box Circuit Diagram\" class=\"wp-image-2223\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box-Schaltplan.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box-Schaltplan-300x147.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box-Schaltplan-768x375.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div style=\"--wp--block-button--width: 50;\" class=\"wp-block-button is-style-default has-custom-width wp-block-button__width wp-block-button__width-50\"><a class=\"wp-block-button__link has-neve-text-color-color has-nv-text-dark-bg-background-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/technic\/ac-connection-box-technical-aspects\/\" style=\"border-width:1px\">Learn More About the Technical Design of AC Connection Boxes \u2192<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover alignfull\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-text-color-background-color has-background-dim-100 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading alignwide has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-18\">Project-Specific Design<\/h2>\n\n\n\n<div class=\"wp-block-columns alignwide has-neve-link-color-color has-text-color has-link-color wp-elements-19 is-layout-flex wp-container-core-columns-is-layout-0fb72d45 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40);flex-basis:50%\">\n<h3 class=\"wp-block-heading has-nv-text-dark-bg-color has-text-color has-link-color has-medium-font-size wp-elements-20\">From Connection Design to the Finished AC Box<\/h3>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"466\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Technische-Zeichnung-AC-Box-Beispiel.webp\" alt=\"Technical Drawing 2D Q3 AC Box\" class=\"wp-image-2128\" style=\"width:auto;height:150px\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Technische-Zeichnung-AC-Box-Beispiel.webp 600w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Technische-Zeichnung-AC-Box-Beispiel-300x233.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Box-planen_8.webp\" alt=\"Plan AC Box 8\" class=\"wp-image-2039\" style=\"width:auto;height:150px\" title=\"\"><\/figure>\n<\/div>\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px.webp\" alt=\"AC connection box for connection to grid transfer point\/transformer. Network type TN-C. 4x busbar 30 x 10 CU. Inverter input for cable 4 x 300 mm\u00b2 via M80 brass cable gland to 4 busbar terminals. Output to transformer for cable 4 x 300 mm\u00b2 via M80 brass cable gland to 4 busbar terminals (both cables to be installed on-site). Additional connection option for cable 1 x 300 mm\u00b2 to 1 busbar terminal. Surge protection T1+2 (standard Citel DAC1-13S-30-275 Imax 50kA, Iimp 12.5kA) including short-circuit protection SFD1-13S-30 for AC SPD T1 (12.5kA 10\/350\u00b5s). Remote signaling contact connection via M16 plastic (cable to be installed on-site). M20 membrane. Enclosure galvanized sheet steel with hardened polyester coating 800x600x300 mm with door. High voltage warning label.           \" class=\"wp-image-2029\" style=\"width:auto;height:200px\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px.webp 800w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-BOX-TNC-630-A_800px-768x768.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top has-nv-site-bg-color has-text-color has-link-color wp-elements-21 is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40);flex-basis:50%\">\n<h3 class=\"wp-block-heading has-medium-font-size\">Customised AC Connection Boxes Instead of Standard Solutions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Every PV installation has different requirements for AC-side distribution. This is why each Q3 AC Box is tailored to the electrical conditions and connection design of the individual project. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Our design process takes the following factors into account:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Number, type and rated AC currents of the inverters<\/li>\n\n\n\n<li>Network type and earthing concept<\/li>\n\n\n\n<li>Rated current and required short-circuit withstand capability<\/li>\n\n\n\n<li>Upstream fuse protection and selectivity requirements<\/li>\n\n\n\n<li>Surge protection concept<\/li>\n\n\n\n<li>Conductor cross-sections, cable entries and strain relief<\/li>\n\n\n\n<li>Installation location and environmental conditions<\/li>\n\n\n\n<li>Technical connection requirements of the distribution network operator (DNO)<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons alignwide is-layout-flex wp-block-buttons-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div style=\"--wp--block-button--width: 100;\" class=\"wp-block-button is-style-secondary has-custom-width wp-block-button__width wp-block-button__width-100\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/products\/project-inquiry\/qfire-pv-firefighter-switch\/\" style=\"border-width:1px\">Start AC Connection Box Project Request \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover alignwide is-light wp-duotone-unset-1\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50);min-height:600px;aspect-ratio:unset;\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-nv-text-dark-bg-background-color has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-22\">Design, Manufacturing and Testing<\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-neve-text-color-color has-text-color has-link-color wp-elements-23\">AC Boxes \u2013 Designed and Manufactured in Germany<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Q3 AC Boxes are designed and manufactured in Germany. Design, manufacturing and testing are carried out in accordance with the applicable requirements of the EN 61439 series of standards. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Each project-specific configuration includes the appropriate product identification and the required technical documentation.<\/p>\n\n\n\n<div style=\"height:22px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-d656815c\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M900,1793.016c-2.796,0-5.594-0.375-8.315-1.125c-7.969-2.199-197.36-55.807-388.728-226.607 c-112.377-100.305-201.914-220.375-266.128-356.88c-79.987-170.042-120.543-365.937-120.543-582.248 c0-9.624,4.431-18.711,12.016-24.637L880.752,13.613c11.308-8.837,27.187-8.837,38.496,0l752.451,587.905 c7.584,5.925,12.016,15.013,12.016,24.637c0,216.312-40.559,412.206-120.546,582.248 c-64.212,136.505-153.751,256.575-266.123,356.88c-191.37,170.801-380.764,224.408-388.732,226.607 C905.592,1792.641,902.796,1793.016,900,1793.016z M178.88,641.351c3.271,367.343,125.555,661.791,363.594,875.387 C701.154,1659.123,862.076,1716.81,900,1729.049c37.924-12.239,198.846-69.926,357.525-212.311 c238.039-213.597,360.325-508.044,363.592-875.387L900,77.925L178.88,641.351z\"><\/path><path d=\"M900,1593.533c-2.798,0-5.594-0.375-8.315-1.125c-6.189-1.71-153.319-43.35-301.636-175.734 c-87.095-77.732-156.485-170.791-206.251-276.582c-61.928-131.65-93.328-283.236-93.328-450.545 c0-9.624,4.432-18.711,12.017-24.637L880.752,213.1c11.308-8.834,27.187-8.839,38.496,0l578.266,451.81 c7.585,5.925,12.017,15.013,12.017,24.637c0,167.309-31.399,318.895-93.329,450.545 c-49.762,105.791-119.155,198.85-206.248,276.582c-148.316,132.385-295.446,174.024-301.64,175.734 C905.596,1593.158,902.798,1593.533,900,1593.533z M353.087,704.725c3.256,278.249,96.237,501.402,276.493,663.417 c118.248,106.279,238.227,150.755,270.42,161.38c32.193-10.625,152.172-55.101,270.42-161.38 c180.256-162.016,273.236-385.169,276.495-663.417L900,277.412L353.087,704.725z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong>Project-Specific Labelling<\/strong><\/strong><\/h3>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-4dd30b28\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M899.996,6.911C405.643,6.911,3.458,409.103,3.458,903.462C3.458,1397.811,405.643,1800,899.996,1800 c494.357,0,896.546-402.189,896.546-896.538C1796.542,409.103,1394.353,6.911,899.996,6.911z M899.996,1737.1 c-459.667,0-833.637-373.97-833.637-833.638c0-459.679,373.969-833.649,833.637-833.649c459.672,0,833.644,373.971,833.644,833.649 C1733.64,1363.13,1359.668,1737.1,899.996,1737.1z\"><\/path><path d=\"M1073.088,393.764v66.982c176.77,69.347,302.257,241.646,302.257,442.716 c0,262.101-213.239,475.332-475.349,475.332c-262.101,0-475.336-213.231-475.336-475.332 c0-201.075,125.491-373.374,302.261-442.725v-66.973c-212.139,72.23-365.162,273.421-365.162,509.698 c0,296.781,241.452,538.234,538.238,538.234c296.79,0,538.251-241.453,538.251-538.234 C1438.247,667.194,1285.223,466.002,1073.088,393.764z\"><\/path><path d=\"M900.004,880.287c17.371,0,31.45-14.084,31.45-31.451V286.086c0-17.371-14.079-31.451-31.45-31.451 c-17.37,0-31.45,14.08-31.45,31.451v562.749C868.554,866.202,882.634,880.287,900.004,880.287z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong><strong>CE conformity<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center dc-card has-border-color has-nv-light-bg-border-color is-layout-flow wp-block-column-is-layout-flow\" style=\"border-width:1px;border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\">\n<div class=\"wp-block-group is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-524f8de7 wp-block-group-is-layout-flex\">\n<div id=\"wp-block-themeisle-blocks-font-awesome-icons-1eebe497\" class=\"wp-block-themeisle-blocks-font-awesome-icons\"><span class=\"wp-block-themeisle-blocks-font-awesome-icons-container\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1800 1800\"><path d=\"M899.996,6.911C405.643,6.911,3.458,409.103,3.458,903.462C3.458,1397.811,405.643,1800,899.996,1800 c494.357,0,896.546-402.189,896.546-896.538C1796.542,409.103,1394.353,6.911,899.996,6.911z M899.996,1737.1 c-459.667,0-833.637-373.97-833.637-833.638c0-459.679,373.969-833.649,833.637-833.649c459.672,0,833.644,373.971,833.644,833.649 C1733.64,1363.13,1359.668,1737.1,899.996,1737.1z\"><\/path><path d=\"M1073.088,393.764v66.982c176.77,69.347,302.257,241.646,302.257,442.716 c0,262.101-213.239,475.332-475.349,475.332c-262.101,0-475.336-213.231-475.336-475.332 c0-201.075,125.491-373.374,302.261-442.725v-66.973c-212.139,72.23-365.162,273.421-365.162,509.698 c0,296.781,241.452,538.234,538.238,538.234c296.79,0,538.251-241.453,538.251-538.234 C1438.247,667.194,1285.223,466.002,1073.088,393.764z\"><\/path><path d=\"M900.004,880.287c17.371,0,31.45-14.084,31.45-31.451V286.086c0-17.371-14.079-31.451-31.45-31.451 c-17.37,0-31.45,14.08-31.45,31.451v562.749C868.554,866.202,882.634,880.287,900.004,880.287z\"><\/path><\/svg><\/span><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\"><strong><strong><strong>Documentation according to EN 61439<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-center q3-boxenmacher has-neve-link-hover-color-color has-text-color has-link-color wp-elements-24 wp-block-paragraph\">Q3. The Box Makers. <\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading alignwide\">Frequently Asked Questions About AC Connection Boxes<\/h2>\n\n\n\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1793811292906\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">When Is an AC Connection Box Used in a PV System?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>An AC connection box is used to combine the AC outputs of one or more photovoltaic inverters and connect them to the downstream low-voltage distribution system. Depending on the system design, it also provides switching, isolation and protection functions. The Q3 AC Box is designed specifically for commercial and industrial PV installations.  <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1793811322992\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Which AC Rated Currents Are Available?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>The Q3 AC Box is available in rated current options of 160 A, 250 A, 400 A and 630 A. Other configurations are available on request. The appropriate variant is selected based on inverter capacity, earthing arrangement, short-circuit conditions and the electrical requirements of the project.  <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1793811332065\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Can the AC Box Be Designed for TN-C and TN-C-S Systems?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes. The Q3 AC Box can be designed for TN-C and TN-C-S earthing arrangements. The design takes account of the relevant earthing system, PEN conductor configuration and any required separation into neutral (N) and protective earth (PE) conductors. The PEN disconnection point and connection components are configured according to the project&#8217;s earthing and protection concept.   <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1793811338277\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Which Surge Protective Devices Can Be Integrated?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Surge protective devices (SPDs), such as Type 1+2+3 devices, can be integrated into the Q3 AC Box according to project requirements. Other configurations are possible depending on the earthing arrangement and protection concept. Device selection and rating take account of the electrical requirements and intended installation conditions.  <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1793811344436\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What Information Is Required to Design an AC Connection Box?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>To design an AC connection box for your project, we require details such as inverter type and quantity, rated AC current, earthing arrangement, short-circuit conditions, upstream protection, conductor cross-sections and installation location. Existing circuit diagrams, protection concepts and the distribution network operator&#8217;s technical connection requirements help us determine the appropriate configuration. <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1793811352470\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What Technical Documentation Is Provided with the AC Box?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Technical datasheets and project-specific documentation are available for the Q3 AC Box. Depending on the configuration, the documentation may include circuit diagrams, technical specifications for the low-voltage switchgear and controlgear assembly, and the required test and conformity documentation in accordance with the applicable requirements of EN 61439. <\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-nv-c-2-background-color has-background\" id=\"produkte\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-right:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-e59bffbc wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns alignfull is-layout-flex wp-container-core-columns-is-layout-5b0bc1de wp-block-columns-is-layout-flex\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-vertically-aligned-top animated fadeIn q3-product-card has-large-font-size is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-cover aligncenter has-custom-content-position is-position-bottom-center\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:0;padding-right:var(--wp--preset--spacing--50);padding-bottom:0;padding-left:var(--wp--preset--spacing--50)\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" class=\"wp-block-cover__image-background wp-image-1733 size-full\" alt=\"Anfrage\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage.webp\" data-object-fit=\"cover\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage.webp 400w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage-150x150.webp 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-link-color-background-color has-background-dim-80 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-0255ba1e wp-block-cover-is-layout-constrained\">\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-25\" style=\"font-size:20px\">AC Connection Box Project Request<\/h2>\n\n\n<div class=\"wp-block-image wp-duotone-unset-2\">\n<figure class=\"aligncenter size-thumbnail has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage-150x150.webp\" alt=\"Submit Project Request\" class=\"wp-image-1733\" style=\"border-style:none;border-width:0px\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/Anfrage.webp 400w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-26 wp-block-paragraph\" style=\"font-size:16px\">Project-specific design of AC connection boxes for grid connection, feed-in points, and storage solutions.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-container-core-buttons-is-layout-00436373 wp-block-buttons-is-layout-flex\">\n<div style=\"--wp--block-button--width: 100;\" class=\"wp-block-button is-style-primary q3-card-link has-custom-width wp-block-button__width wp-block-button__width-100\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/products\/project-inquiry\/project-inquiry-ac-box-configuration-for-your-pv-project\/\">Start AC Connection Box Project Request \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top animated fadeIn q3-product-card has-large-font-size is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-cover aligncenter has-custom-content-position is-position-bottom-center\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:0;padding-right:var(--wp--preset--spacing--50);padding-bottom:0;padding-left:var(--wp--preset--spacing--50)\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" class=\"wp-block-cover__image-background wp-image-1732 size-full\" alt=\"PDF\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF.webp\" data-object-fit=\"cover\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF.webp 400w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF-150x150.webp 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-link-color-background-color has-background-dim-80 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-0255ba1e wp-block-cover-is-layout-constrained\">\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-27\" style=\"font-size:20px\">Technical Documentation AC Box<\/h2>\n\n\n<div class=\"wp-block-image wp-duotone-unset-3\">\n<figure class=\"aligncenter size-thumbnail has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF-150x150.webp\" alt=\"Visit our Technical Download!\" class=\"wp-image-1732\" style=\"border-style:none;border-width:0px\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF-150x150.webp 150w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF-300x300.webp 300w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/PDF.webp 400w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-28 wp-block-paragraph\" style=\"font-size:16px\">Data sheets, circuit diagrams, certificates, and technical documentation for AC distribution and transfer points.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-container-core-buttons-is-layout-00436373 wp-block-buttons-is-layout-flex\">\n<div style=\"--wp--block-button--width: 100;\" class=\"wp-block-button is-style-primary q3-card-link has-custom-width wp-block-button__width wp-block-button__width-100\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"hhttps:\/\/q3-energie.de\/en\/downloads\/ac-connection-box-datasheets-and-technical-documentation\/\">AC Box Technical Downloads \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top animated fadeIn q3-product-card has-large-font-size is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-cover aligncenter has-custom-content-position is-position-bottom-center\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:0;padding-right:var(--wp--preset--spacing--50);padding-bottom:0;padding-left:var(--wp--preset--spacing--50)\"><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-11817 size-full\" alt=\"AC Anschlusstechnik\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/\" style=\"object-position:48% 58%\" data-object-fit=\"cover\" data-object-position=\"48% 58%\" title=\"\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-link-color-background-color has-background-dim-80 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-0255ba1e wp-block-cover-is-layout-constrained\">\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<h2 class=\"wp-block-heading has-text-align-center has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-29\" style=\"font-size:20px\">Products AC Boxes<\/h2>\n\n<div class=\"wp-block-image wp-duotone-unset-4\">\n<figure class=\"aligncenter size-thumbnail has-custom-border\"><img decoding=\"async\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/AC-Anschlusstechnik-150x150.webp\" alt=\"AC Connection Technology\" class=\"wp-image-11817\" style=\"border-style:none;border-width:0px\" title=\"\"><\/figure>\n<\/div>\n\n<p class=\"has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-30 wp-block-paragraph\" style=\"font-size:16px\">Overview of standardized and customized AC boxes for various grid types and power ranges.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-container-core-buttons-is-layout-00436373 wp-block-buttons-is-layout-flex\">\n\n<div style=\"--wp--block-button--width: 100;\" class=\"wp-block-button is-style-primary q3-card-link has-custom-width wp-block-button__width wp-block-button__width-100\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/products\/ac-box-for-pv-systems-up-to-630-a\/\">To AC Products \u2192<\/a><\/div>\n\n<\/div>\n\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top animated fadeIn q3-product-card has-large-font-size is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-cover aligncenter has-custom-content-position is-position-bottom-center\" style=\"border-top-left-radius:8px;border-top-right-radius:8px;border-bottom-left-radius:8px;border-bottom-right-radius:8px;padding-top:0;padding-right:var(--wp--preset--spacing--50);padding-bottom:0;padding-left:var(--wp--preset--spacing--50)\"><img loading=\"lazy\" decoding=\"async\" width=\"751\" height=\"501\" class=\"wp-block-cover__image-background wp-image-2140 size-full\" alt=\"DC Anschlusstechnik\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/DC-Anschlusstechnik.webp\" style=\"object-position:51% 58%\" data-object-fit=\"cover\" data-object-position=\"51% 58%\" title=\"\" srcset=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/DC-Anschlusstechnik.webp 751w, https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/DC-Anschlusstechnik-300x200.webp 300w\" sizes=\"auto, (max-width: 751px) 100vw, 751px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-neve-link-color-background-color has-background-dim-80 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-0255ba1e wp-block-cover-is-layout-constrained\">\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-31\" style=\"font-size:20px\">Q3 DC Connection Technology<\/h2>\n\n\n<div class=\"wp-block-image wp-duotone-unset-5\">\n<figure class=\"aligncenter size-thumbnail has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/q3-energie.de\/wp-content\/uploads\/2026\/02\/DC-Anschlusstechnik-150x150.webp\" alt=\"DC Connection Technology\" class=\"wp-image-2140\" style=\"border-style:none;border-width:0px\" title=\"\"><\/figure>\n<\/div>\n\n\n<p class=\"has-nv-text-dark-bg-color has-text-color has-link-color wp-elements-32 wp-block-paragraph\" style=\"font-size:16px\">Complementary DC generator junction boxes and string boxes for a coordinated complete system<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-container-core-buttons-is-layout-00436373 wp-block-buttons-is-layout-flex\">\n<div style=\"--wp--block-button--width: 100;\" class=\"wp-block-button is-style-primary q3-card-link has-custom-width wp-block-button__width wp-block-button__width-100\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/q3-energie.de\/en\/products\/custom-dc-combiner-boxes\/\">Discover Q3 DC Connection Technology \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Product Overview and Applications Project-Specific AC Connection Solutions for Commercial and Industrial PV Systems The Q3 AC Box combines the AC outputs of PV inverters and provides a connection to the downstream low-voltage distribution system. Depending on project requirements, we integrate NH fuse-switch disconnectors, busbar systems, surge protection and the necessary connection components. Available in&hellip;&nbsp;<\/p>\n","protected":false},"author":1,"featured_media":7513,"parent":7284,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","_themeisle_gutenberg_block_has_review":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-7512","page","type-page","status-publish","has-post-thumbnail","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages\/7512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/comments?post=7512"}],"version-history":[{"count":15,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages\/7512\/revisions"}],"predecessor-version":[{"id":11983,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages\/7512\/revisions\/11983"}],"up":[{"embeddable":true,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages\/7284"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/media\/7513"}],"wp:attachment":[{"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/media?parent=7512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}