ABB XT4SUS200AFJ000XXXU Molded Case Circuit Breaker

ABB SACE Tmax XT4SUS200AFJ000XXXU is a molded‑case circuit breaker (MCCB) in the XT4S family, rated for 200 A at up to 600 V. The XT4S line supports 3‑ or 4‑pole configurations and uses thermal‑magnetic tripping with L, S and I curves to provide precise fault protection across a wide range of fault currents. It offers a rated breaking capacity up to 200 kA, enabling safe interruption of high‑energy faults in industrial or commercial power systems while protecting feeders, transformers, MCCs, and other distribution components. As part of ABB’s Tmax XT platform, this model is designed for reliable protection of low‑voltage circuits in panels and switchgear, aligning with standard MCCB practices for ABB and third‑party installations. The XT4SUS200AFJ000XXXU designation identifies a US‑region variant used in three‑phase systems with or without neutral, depending on the installation, where a robust 200 A, 600 V protection device is required.