The ACB E1.2N 1250 A 4P 66 kA is a withdrawable circuit breaker with a current rating of 1250 A. It has four-poles and can handle short-circuit currents up to 66 kA. The circuit breaker features an In=1250 A rating, which means it is designed to operate at a maximum current of 1250 A. It also has different trip unit settings for various current ranges. The L-I1 setting allows for a current range of 500-1250 A, the S-I2 setting allows for a range of 750-12500 A, the I-I3 setting allows for a range of 1875-18750 A, and the G-I4 setting allows for a range of 125-1250 A. The ACB E1.2N 1250 A 4P 66 kA comes with an auto EKIP Touch LSIG trip unit, which provides protection against overload, short circuit, and ground fault conditions. It also includes HR-HR terminals for easy connection and complete WMP+FP functionality. This circuit breaker is suitable for use in various engineering applications where reliable and efficient protection is required.