The ACB E4.2H is a 3P circuit breaker with a rated current of 4000 A. It has an Icu rating of 100 kA at 415 VAC, indicating its ability to interrupt short-circuit currents. The circuit breaker also has a rated short-time withstand current, Icw (1s), of 85 kA. The ACB E4.2H features a withdrawable auto EKIP touch LSIG trip unit, which provides protection against overload and short circuits. It has a shunt opening of 24 VAC/DC. This complete package includes the WMP+FP+YO components necessary for operation.