Designed for commercial and industrial solar PV systems, LSP 1000V Solar Combiner Boxes integrate DC fuses, surge protection devices, and DC isolators into one compact solution.
The built-in LSP SPDs are TÜV, CE, and CB certified, providing proven surge protection, enhancing system reliability, reducing installation time, improving system safety, and ensuring long-term operational reliability.
From component selection to final product testing, every LSP 1000V Solar Combiner Box is engineered for long term reliability, easy installation, and dependable performance.
We use CE certified components and conduct 100% comprehensive factory testing on every unit, including wiring inspection, functional verification, and electrical performance testing, to ensure safe, reliable operation in demanding photovoltaic applications.
LSP can pre-install and integrate key DC components, including DC fuses, surge protection devices (SPDs), and DC isolators, into the 1000V solar combiner box based on your project requirements, providing a complete DC-side protection solution for solar PV systems.
The factory pre-assembled design reduces on-site wiring, simplifies installation, minimizes wiring errors, and shortens commissioning time. This helps you complete projects more efficiently, accelerate project delivery, and reduce overall installation costs.
LSP integrates DC Fuses, DC SPDs, DC Isolators, and DC MCBs into a single 1000V solar combiner box, reducing on-site component installation and simplifying wiring for a cleaner, more compact system layout.
This integrated design streamlines procurement, minimizes wiring complexity, shortens installation time, and helps you complete projects faster while reducing labor costs and simplifying future maintenance.
LSP 1000V Solar Combiner Boxes integrate essential DC protection components, including DC fuses, DC SPDs, and DC isolator switches, providing comprehensive protection against overcurrent faults, lightning surges, and maintenance risks. This helps you build safer, more efficient, and long-lasting solar energy systems.
LSP provides flexible 1000V Solar Combiner Box solutions designed for commercial rooftops, industrial facilities, utility-scale solar farms, and customized OEM applications.
| Technical Data | SLP-1/1-1000V | SLP-2/1-1000V | SLP-2/2-1000V | SLP-3/1-1000V | SLP-3/3-1000V | SLP-4/2-1000V | SLP-4/4-1000V | SLP-5/5-1000V | SLP-6/6-1000V |
| Input | 1 String | 2 Strings | 2 Strings | 3 Strings | 3 Strings | 4 Strings | 4 Strings | 5 Strings | 6 Strings |
| Output | 1 String | 1 String | 2 Strings | 1 String | 3 Strings | 2 Strings | 4 Strings | 5 Strings | 6 Strings |
| Maximum System Voltage | 1000 V DC | 1000 V DC | 1000 V DC | 1000 V DC | 1000 V DC | 1000 V DC | 1000 V DC | 1000 V DC | 1000 V DC |
| Maximum Output Current | 16 A | 16 A | 32 A | 16 A | 48 A | 32 A | 64 A | 80 A | 96 A |
| Max. DC Short Circuit Current per Input (Isc) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) |
| PV Surge Protector | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) | SLP-PV1000/(S) |
| SPD Max. Continuous Operating Voltage (Ucpv) | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V |
| SPD Maximum Discharge Current (Imax) | 40 kA | 40 kA | 40 kA | 40 kA | 40 kA | 40 kA | 40 kA | 40 kA | 40 kA |
| DC Fuse Holder | LFPV-1038H | LFPV-1038H | LFPV-1038H | LFPV-1038H | LFPV-1038H | LFPV-1038H | LFPV-1038H | LFPV-1038H | LFPV-1038H |
| Fuse Link | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A |
| DC Circuit Breaker | TX7-63Z | TX7-63Z | TX7-63Z | TX7-63Z | TX7-63Z | TX7-63Z | TX7-63Z | TX7-63Z | TX7-63Z |
| Rated Insulation Voltage (Ui) | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V | 1000 V |
| Rated Current (Ie) | 16 A | 16 A | 32 A | 16 A | 48 A | 32 A | 64 A | 80 A | 96 A |
A 1000V Solar Combiner Box is a specialized DC power distribution and protection device designed for photovoltaic (PV) systems with a maximum operating voltage of 1000V DC. It combines the output of multiple solar panel strings into a single DC output before connecting to the inverter, helping simplify system wiring, reduce cable usage, and improve installation efficiency.
The term “1000V” refers to the maximum DC system voltage that the combiner box is designed to withstand and safely operate under. Compared with traditional 600V PV systems, 1000V solar systems allow higher voltage operation, which helps reduce current levels for the same power output. Lower current reduces cable losses, allows the use of smaller cable sizes, improves energy transmission efficiency, and helps reduce overall balance-of-system (BOS) costs.
Designed with IP65/IP66 weatherproof enclosures, UV-resistant materials, and compliance with international standards, LSP 1000V Solar Combiner Boxes provide reliable DC power collection and protection in demanding outdoor environments.
A 1000V Solar Combiner Box is an essential component for photovoltaic (PV) systems operating at up to 1000V DC, especially in commercial, industrial, and large-scale solar applications. It provides a centralized solution for combining multiple PV string outputs, protecting DC circuits, and improving the overall efficiency and reliability of the solar power system.
The main reason to use a 1000V Solar Combiner Box is to simplify DC power management. In a typical solar installation, multiple PV strings generate electricity independently. Without a combiner box, each string requires separate cabling and protection devices connected directly to the inverter, resulting in complex wiring, higher installation costs, and increased maintenance difficulty.
A 1000V combiner box consolidates these multiple DC inputs into a single organized output, reducing cable usage and making system installation cleaner and more efficient.
Another important advantage is centralized electrical protection. A high-quality 1000V Solar Combiner Box integrates critical protection components such as DC fuses, DC surge protective devices (SPDs), and DC isolator switches.
DC fuses protect individual PV strings from overcurrent faults, while DC SPDs help protect sensitive equipment from lightning-induced surges and transient overvoltages. The DC isolator allows safe disconnection during inspection, maintenance, or emergency situations.
The number of PV strings determines the required input capacity of the combiner box. Different solar projects may require different configurations, such as:
DC fuses are one of the most important protection components inside a solar combiner box. They protect individual PV strings from abnormal current caused by short circuits, reverse current, or component failures.
When selecting a combiner box, consider:
Solar systems are exposed to lightning and transient overvoltage risks, especially outdoor installations with long DC cable distances. A high-quality 1000V Solar Combiner Box should include a DC surge protective device (SPD) to protect downstream equipment.
Key SPD factors include:
A DC isolator switch allows technicians to safely disconnect the PV circuit during installation, inspection, and maintenance.
When selecting a combiner box, check:
Ease of installation is another important consideration. Features such as:
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