Bticino G8813A Circuit Breaker

BTicino GA8813A4 is a BTDIN45 residual-current circuit breaker with overcurrent protection (RCBO) designed for BTicino’s modular DIN-rail distribution boards. It is a 1P+N device, Type A, with a nominal current rating In of 4 A, a residual operating current Idn of 30 mA, and a rated short-circuit breaking capacity Icn of 4.5 kA at 230 V AC. The unit provides simultaneous protection against overload/short-circuit and earth leakage, tripping when leakage to earth exceeds 30 mA or when an overcurrent event occurs. Type A denotes capability to detect both AC faults and pulsating DC residual currents, which is common in circuits with switching supplies and electronics. This GA8813A4 variant is part of BTicino’s BTDIN45 family and is intended for DIN-rail mounting in residential or light commercial installations, offering compact protection for branch circuits such as lighting or outlets that require leakage protection alongside overcurrent protection. The device is designed to meet European standards for low-voltage protection and operates at 230 V, enabling safe integration with BTicino modular protection systems in homes and small offices.