The ABB BMFW463/AC30 is a 63 Amp 4-pole Residual Current Circuit Breaker (RCCB) designed to provide advanced protection against electrical shocks and earth leakage. With a 30mA sensitivity, this RCCB ensures the safety of people and equipment by quickly disconnecting the power in the event of a fault. Its 4-pole configuration makes it suitable for use in both AC and DC systems, making it a versatile solution for residential, commercial, and industrial applications. Manufactured by ABB, a global leader in electrical protection, this RCCB offers high reliability and durability for optimal performance.