690V AC Combiner Box 6 In 1 Out

The 690V AC Combiner Box 6 In 1 Out, supplied by China manufacturer Zhejiang Soutya New Energy LLC, is a 690 V three-phase inverter-combiner unit constructed, UV-resistant steel enclosure and IP65 sealing for durable outdoor performance. The enclosure houses six 4-pole AC MCCBs (160 A / 200 A / 250 A selectable) that deliver individual over-current and short-circuit protection to each inverter input, while a single 4P AC molded case circuit breaker (1000 A / 1250 A / 1600 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 690 V AC SPD guards against lightning-induced surges. Engineered for up to six solar string inverters (6*100-160 kW), it provides essential AC combining, surge immunity and maintenance safety .

Application scenarios

1. Utility Scale Ground Mount Blocks (480-830 kW)

The six 160-250 A molded case circuit breakers inputs accept up to six 138 kW string inverters; the 1600 A output molded case circuit breaker feeds a 690 V medium-voltage transformer, reducing cable runs and trenching across large solar parks.

2. Central-Inverter Skid Substations

Mounted beside the inverter rack, the 690V AC Combiner Box 6 In 1 Out acts as a “local AC hub” — paralleling six 690 V inverter outputs before a single large feeder to the MV switchgear, simplifying skid wiring and maintenance access.

3. Large Commercial Rooftops > 500 kW

IP65 steel housing and IK10 impact rating allow rooftop placement where space is limited; the 690 V rated components raise string voltage, cutting DC cabling costs while the 1600 A busbar carries the combined current to the building MSB.

4. Agricultural Greenhouses & Barn Clusters

The Type-2 690 V SPD protects ventilation fans, irrigation pumps and milking equipment from lightning surges common in open fields, while individual input MCCBs let farmers isolate one inverter without shutting down the entire cluster.

5. Distributed 6-Pod Industrial Sites

Each 160–250 A MCCB serves as a local disconnect for a separate building wing or car-port pod; the common 1000–1600 A output MCCB simplifies metering and grid connection, while the SPD guards the whole site against transient over-voltages.