The ACB E4.2N is a 3P circuit breaker with a rated current (In) of 4000A. It has an Icu rating of 66kA at 415V AC and a rated short-time withstand current Icw (1s) of 66kA. The circuit breaker features a withdrawable auto EKIP Touch LSIG trip unit with horizontal rear terminals. It also includes a shunt opening release that operates on 110-120V AC/DC. The ACB E4.2N comes complete with WMP+FP components.