ABB 2CDH782001R0502 Selective Main Circuit-Breaker S 750 DR

Description

• The ABB 2CDH782001R0502 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, allowing them to make or break contact (SHU) without relying on an external control circuit. This design feature makes them especially suitable for use in energy distribution systems that require maximum availability and reliability.

• One of the notable features of the ABB 2CDH782001R0502 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 restricts the magnitude of fault currents, reducing the impact of short circuits and faults. This feature enhances the overall safety and reliability of the electrical distribution system by minimizing stress on upstream protective devices.