<p>The ABB MCCB XT4N is a 100A frame, 3P (three-pole) circuit breaker with a fixed rating of 36kA. It has an In (rated current) of 100A and I1 (adjustable thermal overload protection range) of 40-100A. The S-I2 (short-circuit breaking capacity) ranges from 60A to 1000A, while the I-I3 (instantaneous short-circuit protection range) is between 150A and 1000A. This MCCB features a touch LSI trip unit with class 1 metering capabilities. It is equipped with front terminals for easy installation and is manufactured by ABB.</p>