The ACB E4.2H is a 3P circuit breaker with a rated current (In) of 4000 A. It has an Icu rating of 100 kA at 415 VAC, indicating its ability to interrupt short-circuit currents. The 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 overloads, short circuits, and ground faults. It is equipped with shunt opening and closing mechanisms for efficient operation. Additionally, the circuit breaker includes a motor operator that operates on 24 VAC/DC power supply. The complete package includes WMP+FP+YO+YC+MOP components. This ACB E4.2H circuit breaker offers reliable and versatile protection for electrical systems with its high current ratings, advanced trip unit, and motor operator functionality.