The ABB 2CSR254101R1065 is a residual current circuit breaker with overcurrent (RCBO) protection device that has 4 poles, is rated for 6A current, has 30mA sensitivity, is rated for 400VAC, and comes with a DIN mount, an IP20 protection rating, and the DS200 series. It is designed to provide protection against electric shocks, fire, and short-circuit caused by imbalance or leakage current, and is mainly used for personal safety in residential and commercial applications.