The ABB MCCB XT7S is a 1000A frame, 3P (three-pole) circuit breaker with a fixed rating of 50kA. It has an In (rated current) of 1000A and I1 (adjustable overload current range) of 400-1000A. The S-I2 (short-time withstand current) ranges from 600A to 10000A, while the I-I3 (instantaneous trip current range) is between 1500A and 15000A. This MCCB features a touch LSI trip unit and belongs to class 1 metering. It has front terminals for easy access and installation.