Basic Information
Application
Home, Industrial, Commercial
Transport Package
Standard Export Packing
Production Capacity
1000PCS/Month
Product Description
The PV combiner box is an essential component in solar power systems, designed to consolidate multiple strings of solar panels before connecting to the inverter. It optimizes system structure, simplifies maintenance, and significantly improves safety and reliability for on-grid, off-grid, and solar pump systems.
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Versatile Application: Suitable for input voltages up to 1000Vdc with support for up to 24 strings.
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Advanced Protection: Includes high-voltage fuse protection, anti-connection protection, and lightning surge arresters.
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Intelligent Monitoring: Real-time detection of current, voltage, circuit breaker states, and arc detection to prevent fire hazards.
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Outdoor Durability: IP65 protection class rated for outdoor installation, resistant to harsh environmental conditions.
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Smart Communication: Isolated RS485 port supporting MODBUS-RTU protocol for remote data monitoring.
Technical Parameters
| Parameter Item |
Specifications (CSPVB/24-1) |
| Electric Parameters |
| System Maximum DC Voltage | 1000V |
| Max Input Current per String | 15A |
| Maximum Input Strings | 24 |
| Max Output Switch Current | 360A |
| Number of Output Strings | 1 |
| Lightning Protection |
| Category of Test | Grade 2 Protection |
| Nominal Discharge Current | 20kA |
| Max Discharge Current | 40kA |
| Voltage Protection Level | 3.8kV |
| System & Mechanical |
| Protection Grade | IP65 |
| Output Switch | DC Circuit Breaker / Isolation Switch |
| Box Material | Galvanized Steel / Stainless Steel |
| Operating Temperature | -40°C ~ +85°C |
| Dimensions (W x H x D) | 850x500x200 mm |
Product Gallery
Frequently Asked Questions
What is the primary function of a PV combiner box?
The PV combiner box brings together the output of multiple solar strings into a single set of cables that feed into the inverter. It provides essential over-current and surge protection while simplifying system wiring.
Is this combiner box suitable for outdoor use?
Yes, the unit is designed with an IP65 protection grade, making it waterproof and dustproof, suitable for wall-mounted outdoor installations in temperatures ranging from -40°C to +85°C.
How many solar panel strings can be connected?
This specific model allows for a maximum of 24 strings to be connected, with a nominal voltage of 10A per string (maximum 15A).
Does the box provide lightning protection?
Absolutely. It is equipped with a high-voltage PV surge protector (arrester) with a maximum discharge current of 40kA to protect the system from lightning strikes.
Can the system be monitored remotely?
Yes, it features an isolated RS485 communication port and supports the MODBUS-RTU protocol, allowing for remote monitoring of current, voltage, and the status of protection devices.
What safety mechanisms are built-in to prevent fires?
The box includes real-time arc detection in the DC circuit. If a harmful arc is detected, the system triggers an alarm and trips the switch to cut off the fault circuit immediately.
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