Hot Products
0102030405
High-Quality DC Combiner Box with SPD from China Suppliers - Factory Direct for Enhanced Photovoltaic System Safety
Summary
⚡
PVB series PV Array Combiner Box is used for the connected of PV inverter and PV array to lessen the cable for the connecting, easy to maintain and improve the reliability. We always fix the DC convergence device between the PV inverter and PV array. With many years of experience in the PV power system, it is specially designed for the high efficiency and reliability; it is the supporting components of our PV inverter for the PV power generating. You could connect a certain number of PV components in series to be the PV array according to the voltage range of DC input; then, connect the PV array to PV lighting protection combiner box for the converge, through the output of lightning protection device and breaker, it is easy for switching-in of PV inverter and improve the system safety and lessen the installing time.
Product Overview
As a key component of a solar power generation system, the PVB series photovoltaic combiner box significantly simplifies the connection architecture between the photovoltaic array and the inverter by combining multiple photovoltaic module inputs into a single output. The product adopts an industrial-grade wall-mounted installation solution, which saves space and facilitates daily maintenance by operation and maintenance personnel. Parameters such as the number of input channels and rated current can be customized according to project requirements to adapt to various photovoltaic power station scenarios.
The built-in intelligent protection system includes: diode isolation to prevent reverse current, fuse overcurrent protection, MOV overvoltage absorption device and Type II surge protector, which fully guarantees the stable operation of the system in harsh environments. Its protection level reaches IP65 and the operating temperature range is -25℃ to +60℃, meeting the technical specifications of the mainstream global photovoltaic market.
Features
- IP65 protection class, suitable for outdoor installation use
- High voltage lightning protection (SPD) special for PV
- Each PV input with DC fuse protection and anti-reverse protection (optional)
- PG Cable Gland / MC4 terminal connector (optional), each terminal with waterproof function, convenient and safe system wiring
- Output standard copper core cable 70mm² (max output 95mm²)
- Wide DC input voltage range, max open-circuit voltage up to 1000V
- Wall mounting type — easy to install, easy and convenient maintenance
- Can be custom made to user's specification
Product Parameters
| Type Designation | PVB-2 | PVB-4 | PVB-5 | PVB-6 |
| Max. PV Array Input String | 2 | 4 | 5 | 6 |
| Max. PV Array Voltage | 400Vdc or 1000Vdc | |||
| Rated Current for Each String (Replaceable) | 10A / 15A | 10A / 15A | 10A / 15A | 10A / 15A |
| Output Terminal Type | PG21 | |||
| Rated Output Current | 20A / 30A | 40A / 60A | 50A / 75A | 60A / 90A |
| Input Cable Waterproof Connector | PG7 (4mm PV cable) | |||
| Output Cable Waterproof Connector | PG21 | |||
| Output DC Circuit Breaker | Yes | |||
| PV Special Lightning Protection Module | Yes | |||
| Anti-Reverse Module Protection | Optional | |||
| Protection Degree | IP45 | |||
| Environment Temperature | －25 ～ +60℃ | |||
| Environment Humidity | <90% No condensation | |||
| Altitude | ≤3000m | |||
| Installation | Indoor / Outdoor | |||
ABS Engineering Plastic Type
Outdoor Coating Process and Stainless Steel Type
❓ Frequently Asked Questions
Q What is a PVB series PV Array Combiner Box and what is it used for?
The PVB series PV Array Combiner Box is an electrical device used to combine multiple photovoltaic (PV) string inputs into a single output, simplifying the cable connection between PV arrays and inverters. It reduces installation complexity, improves system reliability, and makes maintenance easier by centralizing protection components such as fuses, surge protectors, and circuit breakers in one enclosure.
Q What is the maximum input voltage supported by the PVB combiner box?
The PVB series combiner box supports a maximum open-circuit voltage of up to 1000Vdc, with available configurations for 400Vdc or 1000Vdc PV array voltage, making it compatible with a wide range of solar panel system designs.
Q Is the PVB combiner box suitable for outdoor installation?
Yes. The PVB series combiner box is designed for both indoor and outdoor installation. It features an IP65-rated enclosure (as stated in the product overview) that protects against dust and water ingress, and operates reliably across an ambient temperature range of -25℃ to +60℃, making it suitable for various outdoor environments.
Q What protection features are built into the PVB combiner box?
The PVB combiner box includes multiple layers of protection: DC fuse overcurrent protection for each input string, a PV-specific surge protection device (SPD) for lightning protection, an optional anti-reverse diode module to prevent reverse current, and an output DC circuit breaker for safe system switching. MOV overvoltage absorption devices are also integrated to handle voltage spikes.
Q How many PV string inputs can the PVB combiner box support?
The PVB series is available in four standard configurations: PVB-2 (2 strings), PVB-4 (4 strings), PVB-5 (5 strings), and PVB-6 (6 strings). Each string supports a rated current of 10A or 15A (replaceable fuse). Custom configurations can also be made to meet specific project requirements.
Q Can the PVB combiner box be customized for specific project needs?
Yes. The PVB series combiner box supports customization. Parameters such as the number of input strings, rated current, connector type (PG Cable Gland or MC4), and enclosure material (ABS engineering plastic or stainless steel with outdoor coating) can be tailored to meet the specific technical and environmental requirements of your photovoltaic power station project.