AC Combiner Box 4 In 1 Out

The AC Combiner Box 4 In 1 Out, supplied by China manufacturer Zhejiang Soutya New Energy LLC, is a 400V three-phase inverter-combiner unit constructed, UV-resistant steel enclosure and IP65 sealing for durable outdoor performance. The enclosure houses four 4-pole mini circuit breakers (up to 100 A each) that deliver individual over-current and short-circuit protection to each inverter input, while a single 4-pole MCCB (250 A / 400 A selectable) provides visible-break isolation and overload protection for the combined output. Factory-wired L1, L2, L3, N and PE copper busbars ensure dependable current-carrying capacity and equipotential bonding, and a built-in Type2 4P AC SPD guards against lightning-induced surges. Engineered for up to four solar string inverters (4*50–100 kW), it provides essential AC combining, surge immunity and maintenance safety.

Application scenarios

1. Light commercial and industrial Rooftops (50-100 kW)

The four 100 Amp miniature circuit breakers inputs accept up to four 25 kW string inverters; the 250A molded case circuit breaker output feeds the main distribution board, giving a single lockable isolation point for maintenance crews on factory roofs.

2. Car-Port & Canopy Arrays

Its shallow, IP65 wall-mount cabinet bolts to steel beams, providing parking shelters with a weather-proof hub where inverter outputs are combined, surge-protected and sent to a 400 V switchboard without extra switchgear.

3. Agricultural Barns & Dairy Sheds

The Type-2 SPD protects milking machines, ventilation fans and feed systems from lightning surges, while individual MCBs let farmers isolate one inverter without shutting down the entire PV cluster.

4. Distributed Commercial Blocks (4-Pod Layout)

Each MCB acts as a local disconnect for a separate building wing; the common MCCB simplifies metering and grid connection, while the SPD guards the whole site against transient over-voltages.

5. Ground Mounted Sub Arrays up to 100 kW

Factory-wired busbars and V-clamp terminals cut on-site assembly time for tracker or fixed-tilt rows, delivering a plug-and-play combiner that merges four inverter outputs and provides inverter-ready AC protection in one weather-proof box.