LSP manufactures 600V DC Solar Combiner Boxes for residential and small commercial & industrial PV systems, providing reliable and efficient DC string combining and protection solutions.
With consistent product quality, flexible configurations, and professional technical support, LSP delivers dependable 600V DC Solar Combiner Box solutions for you.
LSP 600V DC Combiner Boxes offer flexible configurations based on your PV string quantity, input/output requirements, and system architecture, helping you select a solution that fits your specific solar project.
From single-string residential systems to multi-string small commercial and industrial PV projects, the appropriate configuration can be selected according to system voltage, current, and string layout, helping avoid over-specification while making procurement and project deployment more efficient.
LSP 600V DC Combiner Boxes integrate DC SPDs, DC MCBs, and DC fuses into a compact, factory-assembled enclosure. By consolidating essential protection components in one unit, they reduce on-site installation, wiring, and component sourcing work, helping you simplify installation, optimize system layout, and make inspection and maintenance easier.
Make PV system installation simpler and protection more reliable. Inquire about LSP 600V DC Combiner Boxes today.
The 600V DC Combiner Box integrates overload and short-circuit protection, surge protection, and PV string overcurrent protection. Equipped with key components such as DC MCBs, DC SPDs, and DC fuses, it combines PV string collection with multi-level DC-side protection in a single enclosure.
This centralized design simplifies PV system management while making routine inspection, maintenance, and troubleshooting more convenient.
With over 15 years of industry experience, LSP has served customers in 35 countries and works with reliable component suppliers. Key components undergo strict quality inspections, including salt spray and glow-wire testing, to further support product quality and safety.
These quality control measures help ensure consistent quality and reliable performance for every 600V DC Combiner Box.
| Technical Data | SLP-1/1-600V | SLP-2/1-600V | SLP-2/2-600V |
| Input | 1 String | 2 Strings | 2 Strings |
| Output | 1 String | 1 String | 2 Strings |
| Maximum System Voltage | 600 V DC | 600 V DC | 600 V DC |
| Maximum Output Current | 16 A | 32 A | 16 A |
| Max. DC Short Circuit Current per Input (Isc) | 16 A (Changeable) | 16 A (Changeable) | 16 A (Changeable) |
| PV Surge Protector | SLP-PV600/(S) | SLP-PV600/(S) | SLP-PV600/(S) |
| SPD Max. Continuous Operating Voltage (Ucpv) | 600 V | 600 V | 600 V |
| SPD Maximum Discharge Current (Imax) | 40 kA | 40 kA | 40 kA |
| DC Fuse Holder | LFPV-1038H | LFPV-1038H | LFPV-1038H |
| Fuse Link | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A | 10 × 38 mm, 16 A |
| DC Miniature Circuit Breaker | TX7-63Z | TX7-63Z | TX7-63Z |
| Rated Insulation Voltage (Ui) | 600 V | 600 V | 600 V |
| Rated Current (Ie) | 16 A | 32 A | 16 A |
The number of inputs depends on the model. LSP offers different configurations to accommodate various PV system designs and string requirements.
A 600V DC Combiner Box is designed for PV systems with a maximum system voltage of up to 600V DC.
Yes. LSP 600V DC Combiner Boxes are available with weather-resistant enclosures and protection ratings suitable for outdoor solar PV applications.
Depending on the configuration, LSP 600V DC Combiner Boxes can integrate DC fuses, photovoltaic surge protective devices (SPDs), and DC circuit breakers for overcurrent and surge protection.
Typical Internal Components
String fuses / miniature DC circuit breakers: over‑current protection for each PV string; isolate faulted strings without shutting down the whole array
DC surge protective device (SPD): defense against lightning‑induced voltage surges
DC disconnect switch: safe power cut‑off for on‑site maintenance and emergency shutdown
Positive & negative busbars for string convergence
Weather‑proof enclosure (usually IP65): suitable for rooftop/outdoor installation
Main Functions & Uses
Combine Multiple PV Strings
You can use a 600V DC Combiner Box to collect DC power from multiple parallel PV strings and combine them into a single positive and negative output for the solar inverter. This reduces the number of long cables running to the inverter and helps simplify your field wiring.rovide String-Level Overcurrent Protection
Built-in DC fuses or circuit breakers allow you to protect individual PV strings against overcurrent and short circuits. If a fault occurs in one string, you can isolate the affected circuit without shutting down the entire PV array.Provide Surge and Lightning Protection
With an integrated DC Surge Protection Device (SPD), you can protect your PV system against transient overvoltages caused by lightning and electrical switching events. This helps reduce the risk of surge damage to solar panels, cables, and inverters.Enable Safe Disconnection for Maintenance
An integrated DC disconnect switch allows you to safely isolate the DC circuit during inspection, maintenance, or emergency shutdowns. This gives you a convenient way to disconnect the PV array when servicing the system.Protect Components in Outdoor Environments
A weather-resistant enclosure helps protect the internal components from dust, rain, and moisture. You can therefore install the combiner box outdoors, such as on rooftops or near PV arrays, while maintaining reliable DC-side protection.Get A Quote
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