1000V DC Combiner Box 3 In 1 Out MCB type

The 500/1000V DC Combiner Box 3 In 1 Out MCB type, manufactured by Zhejiang Soutya New Energy LLC, is a 1000V DC PV combiner unit specifically engineered for 3-string photovoltaic systems. Featuring a fire-retardant PC enclosure with IP66 protection, the unit ensures exceptional durability and reliable performance in demanding outdoor environments.

This robust combiner integrates essential safety components including one DC surge protective device (SPD), six DC fuse holders (providing individual protection for each of the three strings), and one DC miniature circuit breaker (MCB). Designed for medium-scale solar applications, it delivers comprehensive surge protection and overload protection on the DC side of solar installations.

The configuration enables parallel connection of three PV strings while maintaining dedicated protection for each string through separate fusing. The MCB provides centralized circuit control and convenient disconnection capability for maintenance operations, making this unit an ideal solution for photovoltaic systems requiring enhanced electrical protection and operational flexibility for three string configurations.

Technical Parameter

Wiring Diagram

Application scenarios

1.Medium-Scale Commercial Rooftop Systems

Ideal for shopping malls, medium-sized factories, and commercial buildings requiring three PV string inputs. The 6 fuses (2 per string) ensure individual string protection, while the MCB provides centralized control and safe disconnection for maintenance operations.

2.Agricultural and Industrial Solar Applications

Suitable for large agricultural installations and industrial facilities powering irrigation networks, processing equipment, and storage systems. The 3-string capacity supports higher power requirements while maintaining reliable surge and overload protection.

3.Small Utility-Scale Solar Projects

Perfect for community solar gardens and small utility-scale installations where three PV strings need consolidation. The robust IP66 enclosure ensures weather resistance, and the comprehensive protection system maintains grid connection reliability.

4.Telecommunications and Remote Power Stations

Essential for larger communication base stations and remote power applications requiring enhanced capacity. The three-string configuration provides sufficient power for extended operation of telecom equipment and monitoring systems.

5.Educational and Institutional Campus Installations

Appropriate for schools, universities, and government buildings implementing medium-scale solar projects. The safety features including individual string fusing and main circuit breaker protection make it suitable for public access environments.