ABB SACE E2 1200AF 400AT Main Circuit Breaker

ABB SACE E2 1200AF 400AT Main Circuit Breaker is a molded‑case protective device from ABB’s SACE E2 family, designed to function as the main disconnect and protection in low‑voltage switchgear and distribution panels. The model designation 1200AF and 400AT identifies the unit as part of the 1200‑amp class within the E2 line, reflecting its suitability for high‑current mains with robust mechanical and electrical performance. This primary circuit breaker is used to interrupt fault currents and protect feeders and motors in industrial and commercial environments, providing reliable overcurrent protection and a centralized isolation point for electrical installations.