The ABB 2CSR252101R1404 is a RCBO circuit breaker with a 40 Amp current rating (Inom), a 30 mA residual current rating (Ires), two poles, 230VAC voltage, DIN rail mount, and an IP20 rating for protection against ingress of solid objects. This circuit breaker provides protection against over current, short circuit, and ground fault current. It is suitable for a wide range of commercial and industrial applications.