The MCCB S4X 3P is a fixed circuit breaker with a breaking capacity of 20 kA. It has a rated current of 250 A and offers adjustable overload protection with three different ranges: I1 from 100 A to 250 A, I2 from 250 A to 2500 A, and I3 from 375 A to 3000 A. This circuit breaker features an electronic trip unit and is designed for use with AC power systems. It also comes equipped with front terminals for easy installation and a solid-state release mechanism. The MCCB S4X 3P is manufactured by ABB.