1000V DC Combiner Box 4 In 2 Out Isolator type

The 1000V DC Combiner Box 4 In 2 Out Isolator type, supplied by China manufacturer Zhejiang Soutya New Energy LLC, is a 1000 V DC PV combiner unit featuring a fire-retardant PC enclosure and IP66 protection that ensures high durability and reliable outdoor performance. The device integrates critical safety components including 2 DC surge protective devices, 8 DC fuse holders, and 2 cage-type DC isolator switches. It is designed to deliver comprehensive isolation protection, leakage protection and grounding protection in 4-string photovoltaic systems.

Technical Parameter

Wiring Diagram

Application scenarios

1.4-String Commercial Rooftop

Built for big-box stores, workshops and warehouses running four PV strings across wide roofs. The box merges them into two independent outputs, so one inverter can feed the shop floor while another backs up the office. Twin rotary isolators give lock-out in seconds, and IP66 keeps dust storms and hose-downs out.

2.Solar Farm Sub-Arrays

Slides onto combiner tables in 1–10 MW solar farms. Four sub-arrays come in, two homerun cables go out—each with its own isolator—letting O&M crews shut down half the field for string replacement without touching the rest. Dual SPDs swallow nearby lightning hits.

3.High-Power Agriculture

Clips to barn walls or pivot-irrigated fields where four strings power pumps and grain dryers. Individual fuses per string stop a ground fault in one line from killing the whole crop water supply. UV-stable IP66 shell laughs at fertilizer dust and daily wash-downs.

4.Solar-Storage Hybrids

Mounts on the battery hut: four strings in, output A to the hybrid inverter, output B to the MPPT charger. Either path can be isolated with a twist of its own handle, so techs can swap batteries or reboot the inverter without darkening the critical load.

5.Remote Telecom / Off-Grid Stations

Straps to the pole behind four slimline panels feeding redundant DC rings for radios and sensors. Fire-retardant, IP66 enclosure survives -40 °C nights and desert sun, while the two output legs keep comms gear alive even when one side is down for service.