The MK 40 AMP CURVE B 6kA 30mA RCBO TYPE AC SENTRY 7937s 07937s is a white, Type B circuit breaker with a switch control style and a DIN rail mounting style. It has a maximum amperage of 40A and is designed for electrical wiring applications. This RCD (Residual Current Circuit Breaker with Overload protection) offers instantaneous break time and is suitable for any room. With its 1 pole design and 2 outlets, this GFI Circuit Breaker from MK is a reliable option for ensuring electrical safety in various settings.