Solar PV Combiner Box (Residential & C&I)
• Multi-String Inputs: 1–16 string DC aggregation, compatible with 550V/1000V systems
• Certified DC Protection: Pre-wired with 1000V DC fuses, Class II SPD & circuit breakers
• Rugged IP65 Enclosure: Flame-retardant, anti-UV & anti-corrosion for -25°C to +55°C outdoors
• Smart String Monitoring: Real-time current, voltage, temperature & fault status tracking
Explore GEYA PV Combiner Box Series for Residential & C&I Projects
GEYA provides a complete series of solar PV combiner boxes designed for diverse photovoltaic system scales:
• Residential Series (1 to 2 Strings): Compact, high-safety combiner boxes (GYPV/1-1, GYPV/2-1) supporting 550V/1000V DC with IP65 waterproof enclosures, ideal for residential rooftop solar arrays.
• Commercial & Industrial Series (4 to 8 Strings): Heavy-duty combiner boxes (GYPV/4-1, GYPV/6-1, GYPV/8-1) equipped with 1000V DC fuses, Class II SPD, and high-breaking-capacity DC switches to streamline multi-string inverter connections.
• Utility-Scale Series (12 to 16 Strings): High-capacity DC junction boxes (GYPV/12-1, GYPV/16-1) handling up to 240A total output current, featuring optional intelligent monitoring units for real-time string current, voltage, and temperature tracking.
All GEYA combiner boxes strictly comply with CGC/GF 037:2014 standards and support custom configurations (such as anti-reverse diodes and MC4 connectors) to match your specific solar engineering requirements.
Solar PV Combiner Box Applications
Ideal for home solar installations using 1-2 string combiner boxes (DC 550V/1000V). Simplifies rooftop wiring, provides built-in surge and overcurrent protection, and ensures safe connection to residential hybrid inverters.
Engineered for factory roofs, commercial buildings, and farm microgrids using 4-8 string combiner boxes. Features heavy-duty DC circuit breakers and modular IP65 enclosures to reduce BOS installation costs.
Designed for MW-scale utility power plants utilizing 12-16 string DC combiner boxes. Supports high output current up to 240A with rugged steel enclosures for extreme outdoor conditions.
Equipped with intelligent string monitoring units to measure current, busbar voltage, and internal temperature in real time. Perfect for remote solar farms and precision O&M management.
Partner with GEYA for Tailored Solar Combiner Box Solutions & Engineering Support
Whether you are an EPC contractor requiring customized 1000V multi-string combiner boxes or a regional distributor seeking certified IP65 solar protection equipment, GEYA provides complete end-to-end engineering, full OEM/ODM customization, and reliable global delivery. Contact our technical team today to receive competitive factory-direct pricing, customized wiring diagrams, or download our complete product catalog.
Why Choose GEYA Solar PV Combiner Boxes
Equipped with high-voltage 1000V DC photovoltaic fuses (15A standard) on every string, combined with heavy-duty DC circuit breakers or load isolation switches, ensuring rapid fault clearing and safe disconnection during maintenance.
Built-in plug-and-play Class II DC surge protective devices (SPD) with 20kA nominal discharge current (In) and 40kA maximum discharge current (Imax), effectively safeguarding downstream inverters from lightning strikes and grid overvoltage.
Constructed from flame-retardant, anti-UV, and impact-resistant PVC or cold-rolled steel enclosures. Operating reliably from -25°C to +55°C, ensuring long-term outdoor stability even in desert, coastal, or freezing climates.
Optional intelligent monitoring modules track string currents, busbar voltage, and SPD status in real time via RS485 communication. Supports flexible customization including anti-reverse diodes, MC4 connectors, and tailored string counts.
Solar PV Combiner Box FAQs
GEYA provides a full range of DC solar combiner boxes spanning from 1 to 16 input strings, supporting system voltages of DC 550V and 1000V. Our portfolio includes compact residential units (GYPV/1-1, GYPV/2-1), commercial rooftop models (GYPV/4-1, GYPV/6-1, GYPV/8-1), and high-capacity utility-scale combiner boxes (GYPV/12-1, GYPV/16-1) handling up to 240A total output current.
The voltage rating is determined by the maximum open-circuit voltage (Voc) of your solar string under the lowest expected ambient temperature. For smaller residential solar arrays with fewer series modules, DC 550V models are typically sufficient. For larger commercial rooftops, multi-panel strings, and utility ground mounts, DC 1000V models are required to prevent overvoltage breakdown and ensure code compliance.
Each GEYA PV combiner box comes pre-wired with dedicated 1000V DC photovoltaic fuses (15A standard) on every input channel, a Class II plug-and-play DC Surge Protective Device (SPD, 20kA nominal / 40kA max discharge), and a high-reliability DC circuit breaker or load isolation switch on the output side for safe manual disconnection and overcurrent protection.
Yes. Our combiner boxes feature an IP65 ingress protection rating and are housed in flame-retardant, anti-UV, and impact-resistant PVC or cold-rolled steel enclosures. They undergo rigorous environmental testing and operate stably across an ambient temperature range of -25°C to +55°C and relative humidity up to 95%, making them suitable for coastal, desert, and freezing climates.
For larger installations (GYPV/6-1 through GYPV/16-1), our optional smart monitoring unit measures the real-time DC current of each string, internal busbar voltage, enclosure temperature, and the operating status of the SPD and circuit breaker. It transmits diagnostics to your SCADA or solar monitoring system via RS485/Modbus, allowing rapid detection of shaded, mismatched, or disconnected strings.
Yes, GEYA provides extensive OEM/ODM customization. We can customize input string quantities, DC fuse ratings, brand-specified circuit breakers, anti-reverse diodes, pre-assembled MC4 waterproof connectors, internal wiring layouts, and enclosure dimensions according to your project blueprints and regional standards.
