ABB S263 Circuit Breaker

ABB S263 is a molded-case circuit breaker (MCCB) from ABB's S263 family, offered in 3-pole configurations with B-, C-, and D-type trip curves. The catalog lists 3-pole variants such as S263-B6 through S263-B63 (6–63 A), S263-C0.5 through S263-C63 (0.5–63 A), and S263-D0.5 through S263-D63 (0.5–63 A), providing a broad current-rating range across the curve families. Some S263 models are DIN-rail mountable, including the 3-pole S263-C63, for convenient panel mounting on standard DIN rails. This MCCB line is designed to deliver reliable overcurrent protection in electrical installations and is suitable for use in distribution panels and equipment where ABB’s S-series protection strategy is implemented. The combination of multiple trip curves and wide current ratings supports precise protection of feeders, motor circuits, and other branch circuits in industrial or commercial applications.