400V PV AC Combiner Box

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PV AC combiner box is designed for photovoltaic systems that utilize string inverters. This combiner box is strategically placed between the AC output of the inverter and the grid connection or load. Equipped with both input and output circuit breakers, the PV AC combiner box has a primary purpose of consolidating the output currents from multiple inverters while also shielding them from potential risks originating from the AC grid connection or load. Our PV AC combiner box serves as a crucial point to disconnect the inverter’s output, significantly enhancing the safety of the entire photovoltaic distribution system and ensuring the well-being of installation and maintenance personnel.

Technical Data

Model	PVJ-4/400V	PVJ-6/600V
Number of Input Circuits	4	6
Number of Output Circuits	1
Applicable Circuits	Three-Phase Five-Wire or Three-Phase Four-Wire
Rated Operating Voltage	400V (690VAC customizable)
Single Circuit Input Current	0-80A
Dimensions (WidthHeightDepth, mm)	733733260	933733260
Mounting Dimensions (mm)	590*672	790*672
Mounting Method	50	50

Protection Features
Incoming Line Breaking Capacity	MCCB 70KA (400V) 40KA (480V) 20KA (690V)
Outgoing Line Breaking Capacity	70KA (400V) 50KA (480V) 20KA (690V)
Diversion Lightning Discharge Current	40KA
Short Circuit Protection	Equipped
Monitoring and Communication	Non-equipped You may choose our smart combiner series if necessary.
Protection Rating	IP65

Schematic Diagram

Environment Conditions
Temperature and Humidity	Please provide specific details if the device will be used in areas with gases. Temperature Range: -25°C to 50°C Storage Temperature Range: -40°C to 70°C Humidity: 0% to 95% No condensation, no corrosive elements
Altitude	≤2,000m We offer customized components for operating at the altitude of 3,000m.

Safety
Busbar	Overlapping large-section nickel-coated copper bars
Protection	PC insulated enclosure
Electrical Clearance / Creepage Distance	≥14mm/ ≥25mm
Insulation Resistance	>20MΩ
AC Withstand Voltage	AC3000V, 1MIN
Enclosure Material	SMC
Protection Rating	IP67
Terminal Block	PA66, IP68

Safety

IPKIS uses well-known brands of components from both domestic and international sources, all of which have relevant certifications from reputable organizations.
Internal live parts are shielded by flame-retardant, anti-static, and high-temperature-resistant PC transparent covers.
Our PV AC combiner box achieves an impressive IP67 protection rating.
The arrangement of fuses and circuit breakers is methodical, with clear markings corresponding to precisely labeled input and output connectors located at the bottom of the box, thereby minimizing the potential for wiring errors.
We offer waterproof connectors with IP68 protection rating.
The internal connecting wires strictly adhere to IEC specifications, utilizing specialized photovoltaic cables.

Convenience

We prioritize convenience in our design. Input fuses and output circuit breakers are arranged vertically for ease of on-site maintenance and operation.
The layout of circuit breakers for input and output is flat, simplifying on-site wiring.
Additionally, ample space is allocated beneath the fuses/breakers, facilitating effortless on-site wiring.