The ABB MCCB XT7H is a 1000A frame, 3P (three-pole) circuit breaker with a fixed rating of 70kA. It has an In (rated current) of 1000A and I1 (adjustable overload range) of 400-1000A. The S-I2 (short-time withstand current) ranges from 600A to 10000A, while the I-I3 (instantaneous trip range) ranges from 1500A to 15000A. This MCCB features a touch LSI trip unit and is classified as class 1 metering. It has front terminals for easy installation and is manufactured by ABB.