1000V DC Combiner Box 4 In 2 Out MCB type

The 500/1000V DC Combiner Box 4 In 2 Out MCB 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 DC miniature circuit breakers. It is designed to deliver comprehensive overcurrent and overvoltage protection in 4-string photovoltaic systems.

Technical Parameter

Wiring Diagram

Application scenarios

1.Medium-Scale Commercial and Industrial Rooftop Solar Systems

Ideal for commercial buildings (e.g., factories, warehouses, shopping malls) with four PV strings requiring consolidation into two independent output circuits. The dual MCBs allow separate control for different loads or inverters, while the 8 fuses (2 per string) ensure individual string protection.

2.Solar Power Plants with Multiple Sub-Arrays

Suitable for small to medium solar farms where four PV sub-arrays need to be combined and distributed to two inverters or two sections of a larger system. The configuration supports efficient energy management and redundancy.

3.Hybrid Solar-Storage Systems with Dual Outputs

Designed for systems integrating solar with battery storage, where two outputs are used—one for grid-tie inverters and another for charging battery banks. The dual MCBs enable safe disconnection for maintenance or fault isolation.

4.Agricultural and Irrigation Solar Projects

Perfect for large agricultural setups powering multiple equipment systems (e.g., irrigation pumps, processing machinery) via two output channels. The IP66 protection ensures durability in harsh environments like farms or rural areas.

5.Industrial Microgrids and Backup Power Systems

Optimal for industrial facilities using solar microgrids with dual redundant outputs for critical loads. The dual MCBs provide independent circuit control, enhancing system reliability and safety during operation or maintenance.