The ACB E4.2N is a 4000 A, 3P circuit breaker with a withdrawable feature. It has a short-circuit breaking capacity of 66 kA. The nominal current is 4000 A, and the rated current ranges from 1600 A to 4000 A for L-I1, 2400 A to 40000 A for S-I2, and 6000 A to 60000 A for I-I3. The ground fault protection range is from 400 A to 4000 A for G-I4. It features an auto EKIP Touch LSIG trip unit and HR-HR terminal complete with WMP+FP functionality.