The ABB MCCB XT4N is a 160A frame, 3P (three-pole) circuit breaker with a fixed rating of 36kA. It has an In (rated current) of 160A and I1 (adjustable overload current range) of 64-160A. The S-I2 (short-time withstand current) ranges from 96A to 1600A, while the I-I3 (instantaneous trip current range) is between 240A and 1600A. This MCCB features a touch LSI trip unit and belongs to class 1 metering. It is equipped with front terminals for easy installation.