The ACB E4.2H is a 4-pole circuit breaker with a rated current (In) of 4000A. It has a short-circuit breaking capacity (Icu) of 100kA at 415V AC and a rated short-time withstand current (Icw) of 85kA for 1 second. The circuit breaker features a withdrawable auto EKIP touch LSIG trip unit and has a shunt opening of 24VAC/DC. It comes complete with WMP+FP+YO components.