{"id":7389,"date":"2026-02-26T11:23:27","date_gmt":"2026-02-26T10:23:27","guid":{"rendered":"https:\/\/q3-energie.de\/pv-connection-technology-products-firefighter-switches-generator-junction-boxes-ac-dc-boxes\/gak-lite-generator-junction-box-with-surge-protection-dc-combiner-1500-v\/"},"modified":"2026-05-27T17:08:20","modified_gmt":"2026-05-27T15:08:20","slug":"lite-dc-combiner","status":"publish","type":"page","link":"https:\/\/q3-energie.de\/en\/products\/lite-dc-combiner\/","title":{"rendered":"GAK LITE \u2013 generator junction box with surge protection | DC combiner 1500 V"},"content":{"rendered":"\n
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GAK LITE \u2013 preconfigured generator junction box with Type 1+2 surge protection up to 1,500 V DC<\/h1>\n\n\n\n
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Standardized DC combiner box for PV systems with 1\u20133 MPPT \u2013 including Type 1+2 surge protection, electrically tested, and available at short notice.<\/strong><\/h3>\n\n\n\n
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Technical design of the GAK LITE \u2192<\/a><\/div>\n\n\n\n
Integrated DC surge protection \u2192<\/a><\/div>\n\n\n\n
Variant overview \u2013 1, 2 or 3 MPPT \u2192<\/a><\/div>\n\n\n\n
GAK LITE or custom GAK? \u2192<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Applications of the GAK LITE \u2013 standard solution with Type 1+2 surge protection<\/h2>\n\n\n\n

The GAK LITE is used in particular for PV systems with clearly defined string and protection requirements where a cost-effective, quickly available standard solution is required.<\/h3>\n\n\n\n
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Commercial and logistics roofs with recurring string structures<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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For standardized PV systems with integrated Type 1+2 surge protection<\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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Cost-effective series solution with fast availability<\/strong><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Technical design of the GAK LITE (DC combiner 1,500 V DC)<\/h2>\n\n\n\n
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The GAK LITE is a preconfigured DC combiner solution for photovoltaic systems with clearly defined technical requirements. It is particularly suitable for projects with 1\u20133 MPPT where a cost-effective, standards-compliant, and quickly available generator connection solution is required. <\/em><\/p>\n\n\n\n

The standardized design significantly reduces planning effort\u2014without compromising on safety or the protection concept.<\/strong><\/strong><\/strong><\/h3>\n<\/div>\n<\/div>\n\n\n\n
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System voltage up to 1,500 V DC<\/strong><\/strong><\/strong>The GAK LITE is designed for system voltages up to 1,500 V DC, making it suitable for modern PV systems in commercial, industrial, and ground-mounted applications. The design takes into account the typical requirements of current inverter and module concepts in the high-voltage range and is engineered for continuous operation in demanding environments. <\/p><\/div>\n\n\n\n

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Type 1+2 surge protection<\/strong><\/strong><\/strong>As standard, the GAK LITE is equipped with Type 1+2 DC surge protection. This makes the solution suitable both for systems with external lightning protection and for industrial environments with an increased risk of surges. The surge arresters are integrated in compliance with standards and reliably protect inverters and downstream components against transient overvoltages. <\/p><\/div>\n\n\n\n

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Variants for 1 | 2 | 3 MPPT <\/strong><\/strong><\/strong>The GAK LITE is available in variants for 1, 2, or 3 MPPT. The preconfigured versions cover typical string concepts and enable fast, predictable implementation of recurring system structures\u2014without custom special designs. <\/p><\/div>\n\n\n\n

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Protection class \/ enclosure<\/strong><\/strong><\/strong>The GAK LITE is built in a robust polycarbonate enclosure. Depending on the variant, the enclosure meets IP66 or IP67 protection ratings and is UV-resistant as well as mechanically robust (IK08).
This also makes the solution suitable for industrial and demanding environments.
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Terminals \/ PE \/ DC+ \/ DC-<\/strong><\/strong><\/strong><\/strong>The internal wiring is structured and standards-compliant via clearly defined connection areas for PE, DC+ and DC\u2013.The clean separation of potentials ensures safe installation, clear assembly, and traceable documentation in the event of service.<\/p><\/div>\n<\/div>\n<\/div>\n\n\n\n

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\"GAK\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Despite the high protection rating, the generator junction box must be installed in a weather-protected location. Installation under roof overhangs, in technical areas, or similarly protected mounting zones is recommended to ensure long-term operational reliability. <\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n

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Integrated Type 1+2 DC surge protection<\/h2>\n\n\n\n
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The GAK LITE is equipped as standard with the Q3-PV1500 Type 1+2 combined arrester.

The surge protection is designed for PV systems up to 1,500 V DC and reliably protects inverters and downstream components against transient overvoltages caused by lightning or switching events. The arrester is specifically designed for use in generator junction boxes, string boxes, and inverter environments. <\/p>\n<\/div>\n\n\n\n

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SPD Typ 1+2 nach EN \/ IEC 61643-31<\/div><\/summary>
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The integrated combined arrester complies with:<\/p>\n\n\n\n

\u25a0 IEC 61643-31:2018
\u25a0 EN 61643-31
\u25a0 CE conformity
\u25a0 T\u00dcV Rheinland certification<\/h3>\n\n\n\n

This means it can be used in compliance with standards both in systems with an external lightning protection system (LPS) and in industrial PV installations.<\/p>\n<\/div><\/details>\n\n\n\n

Ableitf\u00e4higkeit<\/div><\/summary>
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Technical specifications of the Q3-PV1500:<\/p>\n\n\n\n

\u25a0 Nominal discharge current In (8\/20 \u00b5s): 20 kA
\u25a0 Impulse discharge current Iimp (10\/350 \u00b5s): 6.25 kA
\u25a0 Total discharge current Itotal (10\/350 \u00b5s): 12.5 kA
\u25a0 Maximum discharge current Imax (8\/20 \u00b5s): 40 kA
\u25a0 Response time: < 25 ns <\/h3>\n\n\n\n

These values ensure safe discharge of high-energy impulses in PV systems up to 1,500 V DC.<\/p>\n<\/div><\/details>\n\n\n\n

Schutzpegel<\/div><\/summary>
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The protection level Up is:<\/p>\n\n\n\n

\u25a0 \u2264 5.2 kV (DC+ \/ DC\u2013 to PE)<\/h3>\n\n\n\n

This effectively limits the voltage level in the event of a fault and reduces the insulation stress on downstream components.<\/p>\n<\/div><\/details>\n\n\n\n

Statusanzeige und Fernmeldekontakt<\/div><\/summary>
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The Q3-PV1500 features:<\/p>\n\n\n\n

\u25a0 Visual status indicator (green \/ red)
\u25a0 Potential-free remote signaling contact for condition monitoring<\/h3>\n\n\n\n

This enables easy integration into monitoring or building management systems.<\/p>\n<\/div><\/details>\n\n\n\n

Einsatz in Geb\u00e4ude- und Industrieanlagen<\/div><\/summary>
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The integrated Type 1+2 arrester is suitable for:<\/p>\n\n\n\n

\u25a0 PV systems on commercial and industrial roofs
\u25a0 Systems with external lightning protection
\u25a0 Ground-mounted systems in the high-voltage range
\u25a0 DC-side protection concepts in accordance with current standards<\/h3>\n\n\n\n

The permissible temperature range is \u201340\u00b0C to +70\u00b0C, covering typical outdoor applications.<\/p>\n<\/div><\/details>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Variant overview \u2013 1, 2 or 3 MPPT<\/h2>\n\n\n\n
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The GAK LITE is available in three standardized versions and covers typical inverter concepts with 1 to 3 MPPT. All variants are equipped with integrated Type 1+2 DC surge protection and are designed for system voltages up to 1,500 V DC. The preconfigured design enables fast project implementation for recurring system concepts. <\/p>\n<\/div>\n<\/div>\n\n\n\n

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GAK LITE 1 MPPT<\/h3>\n\n\n\n
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Standard solution for inverters with one MPP tracker.<\/em><\/p>\n\n\n

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For compact PV systems or smaller commercial roofs<\/strong><\/p><\/div>\n\n\n\n

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Reduced installation effort<\/strong><\/p><\/div>\n\n\n\n

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Cost-effective solution for simple string concepts<\/strong><\/p><\/div>\n\n\n\n

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Integrated Type 1+2 SPD<\/strong><\/p><\/div>\n\n\n\n

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Standards-compliant DC+ \/ DC\u2013 \/ PE connection<\/strong><\/p><\/div>\n<\/div>\n<\/div>\n\n\n\n

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GAK LITE 2 MPPT<\/h3>\n\n\n\n
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For inverters with two independent MPP trackers.<\/em><\/p>\n\n\n

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Ideal for roof areas with different orientations<\/strong><\/p><\/div>\n\n\n\n

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Clean separation of generator fields<\/strong><\/p><\/div>\n\n\n\n

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Clearly structured DC wiring<\/strong><\/p><\/div>\n\n\n\n

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Integrated Type 1+2 SPD per MPP section<\/strong><\/p><\/div>\n\n\n\n

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Pre-assembled standard version<\/strong><\/p><\/div>\n<\/div>\n<\/div>\n\n\n\n

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GAK LITE 3 MPPT<\/h3>\n\n\n\n
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For higher-performance inverters with three MPP trackers.<\/em><\/p>\n\n\n

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Suitable for more complex roof structures<\/strong><\/p><\/div>\n\n\n\n

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Flexible string distribution<\/strong><\/p><\/div>\n\n\n\n

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Uniform protection and connection structure<\/strong><\/p><\/div>\n\n\n\n

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Integrated Type 1+2 DC surge protection<\/strong><\/p><\/div>\n\n\n\n

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Cost-effective series solution for larger commercial systems<\/strong><\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Design, manufacturing and testing in Germany<\/h2>\n\n\n\n
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The GAK LITE is designed, assembled, and tested in Germany. Even as a standard solution, each unit is subject to a clearly defined quality and test structure. The design is standards-compliant for PV systems up to 1,500 V DC, taking into account applicable installation and protection requirements. <\/p>\n\n\n\n

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designed to standards<\/strong> up to 1,500 V DC<\/strong><\/strong><\/strong>The GAK LITE concept is based on the relevant standards for:\u25a0 DC installations in PV systems\u25a0 Surge protection to EN \/ IEC 61643-31\u25a0 Enclosure requirements to EN 62208\u25a0 Protective measures in accordance with VDE requirements<\/p><\/div>\n\n\n\n

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fully electrically tested<\/strong>Each generator junction box is electrically tested before delivery. This includes, among other things:\u25a0 Visual inspection\u25a0 Protective conductor continuity\u25a0 Wiring check\u25a0 Functional test of the protective components <\/p><\/div>\n\n\n\n

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documented<\/strong>The technical design is documented on a project-specific basis.Serial numbers and components are clearly traceable.<\/p><\/div>\n\n\n\n

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with test report<\/strong><\/strong><\/strong>This ensures that technical acceptance is transparently documented and integration into the system documentation is straightforward.<\/p><\/div>\n<\/div>\n<\/div>\n\n\n\n

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Download technical documents for GAK \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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When is GAK LITE the right solution\u2014and when is a custom GAK?<\/h2>\n\n\n\n
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Not every PV system requires an individual custom solution. While the GAK LITE was developed for clearly defined standard concepts, the custom GAK offers maximum technical freedom for complex requirements. <\/em><\/p>\n<\/div>\n<\/div>\n\n\n\n

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GAK LITE<\/h3>\n\n\n\n
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Standardized<\/strong><\/p><\/div>\n\n\n\n

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1\u20133 MPPT<\/strong><\/p><\/div>\n\n\n\n

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Available at short notice<\/strong><\/p><\/div>\n\n\n\n

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Cost-effective<\/strong><\/p><\/div>\n<\/div>\n\n\n\n

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The GAK LITE is the right choice if:

\u25fc\ufe0e the system concept is clearly defined
\u25fc\ufe0e 1\u20133 MPPT are sufficient
\u25fc\ufe0e a cost-effective solution that is available at short notice is required<\/p>\n<\/div>\n\n\n\n

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Custom GAK<\/h3>\n\n\n\n
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Customized<\/strong><\/p><\/div>\n\n\n\n

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Freely configurable<\/strong><\/p><\/div>\n\n\n\n

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Planned on a project basis<\/strong><\/p><\/div>\n\n\n\n

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Maximum technical flexibility<\/strong><\/p><\/div>\n<\/div>\n\n\n\n

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A custom GAK is recommended if:

\u25fc\ufe0e special protection or grounding concepts are required
\u25fc\ufe0e high string counts or special connection requirements apply
\u25fc\ufe0e the project must be planned with technical flexibility<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Go to custom GAKs \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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Project inquiry for GAK LITE \u2013 request quantity and variant<\/h2>\n\n\n\n
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Would you like to use the GAK LITE for your project and need a quotation? Select the appropriate variant (1, 2, or 3 MPPT) and let us know the required quantity. <\/strong><\/strong>

Using the inquiry form below, we capture all relevant key data quickly and in a structured way\u2014and provide you with a suitable quotation including tiered pricing.<\/p>\n<\/div>\n\n\n\n

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As a standardized DC combiner solution, the GAK LITE is available at short notice and is particularly cost-effective for larger quantities. We offer attractive tiered pricing for recurring system concepts in the commercial and industrial sector. If required, we will also support you in selecting the right variant. <\/em><\/em><\/em><\/p>\n\n\n\n

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Start project inquiry \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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Project inquiry GAK LITE<\/h2>\n\n\n
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Request your personal quotation via this form for the GAK LITE 1\u20133 MPPT variants\u2014depending on quantity, with attractive tiered pricing.<\/p>\n\n\n\n

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Project inquiry GAK LITE \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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Technical documents DC connection technology<\/h2>\n\n\n
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Datasheets, certificates, and technical documentation for our entire DC connection technology portfolio, including LITE and Super Multi Box.<\/p>\n\n\n\n

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Technical documents DC connection technology \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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\"Anfrage\"<\/span>
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Project inquiry GAK | DC combiner<\/h2>\n\n\n
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\"Inquiry\"<\/figure>\n<\/div>\n\n\n

Form for the project-specific design of your generator junction box (GAK) or DC combiner, including a suitable quotation.<\/p>\n\n\n\n

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Start project inquiry for PV generator junction box \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
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\"Super<\/span>
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DC Combiner Super Multi Box<\/h2>\n\n\n
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Intelligent DC combiner with active PV string fault discrimination, automatic shutdown of faulty strings, and integrated individual string monitoring.<\/p>\n\n\n\n

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How it works + technology Super Multi Box \u2192<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Applications of the GAK LITE \u2013 standard solution with Type 1+2 surge protection The GAK LITE is used in particular for PV systems with clearly defined string and protection requirements where a cost-effective, quickly available standard solution is required. Commercial and logistics roofs with recurring string structures For standardized PV systems with integrated Type 1+2… <\/p>\n","protected":false},"author":1,"featured_media":7392,"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-7389","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\/7389","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=7389"}],"version-history":[{"count":0,"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/pages\/7389\/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\/7392"}],"wp:attachment":[{"href":"https:\/\/q3-energie.de\/en\/wp-json\/wp\/v2\/media?parent=7389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}