ABB S3 UE 250S Circuit Breaker

ABB SACE Isomax S3/UE 250/S/25/M is a four-pole molded-case circuit breaker from ABB's S3/UE Isomax family, rated for 250 A at 400 V. This low-voltage device interrupts fault currents to protect distribution networks and feeders within industrial switchgear and service panels. The model code S3/UE 250/S/25/M identifies the four-pole configuration and 250 A current rating at 400 V, making it suitable for installation in commercial and industrial environments that require reliable overcurrent protection for feeders, motors, and other line-side circuits within ABB's Isomax protection scheme. The S3/UE series is designed to fit into standard low-voltage panels and serves as a component of ABB's broader SACE portfolio for MCCB-based protection across industrial applications.