ABB 2CDH782001R0547 Selective Main Circuit-Breaker S 750 DR

Description

• The ABB 2CDH782001R0547 belongs to ABB's S 750 DR series of selective main circuit-breakers (SMCBs). These circuit-breakers are designed with a unique voltage-independent operating principle, which means they can make or break contact (SHU) without relying on an external control circuit. This design feature enhances their suitability for use in energy distribution systems with high availability requirements.

• One of the standout features of the ABB 2CDH782001R0547 is its ability to provide total selectivity to downstream miniature circuit breakers (MCBs). Total selectivity ensures that in the event of a fault or overload, only the nearest protective device trips while allowing the rest of the system to remain operational. This selective tripping prevents unnecessary power disruptions and contributes to the overall reliability of the electrical distribution system.

• These circuit-breakers offer outstanding selectivity to upstream protective devices due to their unique current-limiting selectivity. Current limiting helps restrict the magnitude of fault currents, reducing the impact of short circuits and faults on upstream protective devices. This feature enhances the overall safety and reliability of the electrical distribution system by minimizing stress on these devices.