The ABB BMFW440/AC100 is a high-performance Residual Current Circuit Breaker (RCCB) designed to provide advanced protection against electrical faults in residential, commercial, and industrial settings. With a 40A current rating, 4-pole configuration, and a 100mA sensitivity level, this RCCB ensures rapid detection of leakage currents, preventing electrical shock hazards and reducing the risk of fire. Ideal for systems requiring high safety standards, this RCCB from ABB is engineered to provide reliable protection in a wide range of applications.