{"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":"2026-05-26T14:51:25","modified_gmt":"2026-05-26T12:51:25","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 PV Systems up to 630 A"},"content":{"rendered":"\n
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AC Box | AC Connection Boxfor PV Systems up to 630 A<\/h1>\n\n\n\n
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Modular AC connection box for safe inverter feed-in to the low-voltage network \u2013 compliant with EN 61439.<\/strong><\/h3>\n\n\n\n
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Technical Details AC Box \u2192<\/a><\/div>\n\n\n\n
AC Connection Box Product Variants \u2192<\/a><\/div>\n\n\n\n
Request AC Connection Box Project \u2192<\/a><\/div>\n\n\n\n
AC Connection Box Download Area \u2192<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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AC Box for Photovoltaics \u2013 Safe Grid Feed-In<\/h2>\n\n\n\n
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The Q3 AC Box connects photovoltaic inverters safely and in compliance with standards to the grid connection point or transformer.As a high-performance AC connection box, it provides:<\/p>\n\n\n\n

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Consolidation of high AC currents<\/strong><\/p><\/div>\n\n\n\n

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Integration of NH load break switches<\/strong><\/strong><\/p><\/div>\n\n\n\n

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Overcurrent protection and selectivity<\/strong><\/p><\/div>\n\n\n\n

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Surge protection Type 1+2 (optionally expandable)<\/strong><\/p><\/div>\n\n\n\n

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Standards-compliant PEN separation for TN-C \/ TN-C-S<\/strong><\/strong><\/p><\/div>\n<\/div>\n\n\n\n

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The AC Box is specifically designed for commercial and industrial PV systems.<\/p>\n<\/div>\n\n\n\n

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AC Box Variants | 160 A to 630 A<\/h2>\n\n\n\n

The AC Box is available in the following rated currents:<\/p>\n\n\n\n

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AC Box 160 A<\/strong> \u2013 compact AC connection solution for PV systems in the lower power range with standards-compliant feed-in to the low-voltage network.<\/p><\/div>\n\n\n\n

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AC Box 250 A<\/strong> \u2013 high-performance AC connection box for commercial PV projects with project-specific overcurrent protection and selectivity concept.<\/p><\/div>\n\n\n\n

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AC Box 400 A<\/strong> \u2013 robust AC distribution for consolidating high AC currents in industrial photovoltaic systems.<\/p><\/div>\n\n\n\n

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AC Box 630 A<\/strong> \u2013 high-current AC connection box for industrial feed-in points with NH load break switches and optionally integrated surge protection.<\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

Depending on the project, busbar cross-section, NH size, SPD design, and cable entries are adapted.<\/p>\n\n\n\n

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Typical features: \u25a0 IP66 enclosure (indoor or outdoor) \u25a0 Copper busbar system \u25a0 Tool-operated PEN separation point \u25a0 SPD 3+1 configuration for TN-C-S<\/strong><\/p>\n\n\n\n

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View Q3 AC Box Data Sheets \u2192<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Technical Features of the Q3 AC Box<\/h2>\n\n\n\n
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Busbars & Touch Protection<\/strong>The AC Box features a touch-safe busbar system with transparent cover. This allows visual inspection and maintenance without compromising safety. <\/p><\/div>\n\n\n\n

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NH Load Break Switch<\/strong>Integrated NH disconnectors enable safe disconnection of the AC side. Design is project-specific according to rated current and short-circuit withstand capability. <\/p><\/div>\n<\/div>\n<\/div>\n\n\n\n

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Surge Protection<\/strong>Optional or integrated: SPD Type 1+2+3 for protection of inverters and downstream components.<\/p><\/div>\n\n\n\n

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Enclosure & Protection Rating<\/strong>The AC Box is available with IP66 enclosure, suitable for indoor and outdoor installation.<\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n

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AC Box for TN-C and TN-C-S Networks<\/h2>\n\n\n\n
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The Q3 AC Box is designed for the following network types:<\/p>\n\n\n\n

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TN-C-S<\/strong><\/strong><\/p><\/div>\n\n\n\n

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TN-C<\/strong><\/p><\/div>\n<\/div>\n\n\n\n

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The PEN separation point is executed in compliance with standards and clearly marked.The entire AC connection box is manufactured and tested according to EN 61439.<\/p>\n<\/div>\n\n\n\n

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Project-Specific Configuration Instead of Standard Solution<\/h2>\n\n\n\n
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Each AC Box is tailored to the specific PV project.<\/em>Planning parameters:<\/p>\n\n\n\n

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Network type and earthing concept<\/strong><\/p><\/div>\n\n\n\n

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Rated current and short-circuit withstand capability<\/strong><\/p><\/div>\n\n\n\n

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Overcurrent protection and selectivity<\/strong><\/p><\/div>\n\n\n\n

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Grid operator requirements<\/strong><\/p><\/div>\n\n\n\n

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Cable entry and strain relief<\/strong><\/p><\/div>\n\n\n\n

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Indoor or outdoor installation<\/strong><\/p><\/div>\n<\/div>\n\n\n\n

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This results not in a standard AC Box, but in a technically appropriate solution for your project.<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n

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Made in Germany \u2013 Development & Manufacturing<\/h2>\n\n\n\n
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The Q3 AC Box is developed and manufactured in Germany.<\/strong><\/p>\n<\/div>\n\n\n\n

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Each AC connection box receives:<\/p>\n\n\n\n

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Project-specific labeling<\/strong><\/p><\/div>\n\n\n\n

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CE conformity<\/strong><\/p><\/div>\n\n\n\n

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Documentation according to EN 61439<\/strong><\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n

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AC Connection Box Project Request<\/h2>\n\n\n\n
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Would you like to have an AC connection box designed for your specific project, have technical details reviewed, or select the appropriate configuration for your photovoltaic or storage system?<\/strong>Using the request form below, we capture all relevant project data in a structured and traceable manner.<\/p>\n<\/div>\n\n\n\n

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You are welcome to send circuit diagrams, grid requirements, protection concepts, or other technical documentation directly. Based on this, we review the electrical parameters, dimension busbars, protective devices, and connection points, and design the AC Box to match your project. <\/em><\/p>\n<\/div>\n<\/div>\n\n\n\n

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Start AC Connection Box Project Request \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n
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\"Anfrage\"<\/span>
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AC Connection Box Project Request<\/h2>\n\n\n
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Project-specific design of AC connection boxes for grid connection, feed-in points, and storage solutions.<\/p>\n\n\n\n

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Start AC Connection Box Project Request \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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AC Box Technical Documentation<\/h2>\n\n\n
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Data sheets, circuit diagrams, certificates, and technical documentation for AC distribution and transfer points.<\/p>\n\n\n\n

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AC Box Technical Downloads \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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AC Connection Box Technology<\/h2>\n\n\n
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Overview of technical designs and configuration options for the AC Box for different network types and power ranges.<\/p>\n\n\n\n

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To Technical Overview \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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Q3 DC Connection Technology<\/h2>\n\n\n
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Complementary DC generator junction boxes and string boxes for a coordinated complete system<\/p>\n\n\n\n

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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":"

Technical Features of the Q3 AC Box<\/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,"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":0,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages\/7512\/revisions"}],"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}]}}