ABB f804bs Circuit Breaker

ABB F804BS-63/0,3 RCCB is a four-pole residual-current circuit breaker designed for three-phase systems with a neutral, providing earth-fault protection by disconnecting when leakage current exceeds 300 mA. The device has a rated current of 63 A and is an AC-type RCCB, part of ABB’s F804BS family, intended for installation in distribution boards to protect circuits from earth faults in commercial and light-industrial environments. With a 63 A In rating and a 0.3 A residual current rating, the F804BS-63/0,3 interrupts all four conductors of the protected circuit when the threshold is reached, ensuring isolation of the affected panel or branch circuit. This ABB component is designed to be integrated into standard protection schemes alongside other ABB protective devices in installations where residual-current protection for a three-phase supply with neutral is required.