The ABB E3N2000 R2000 PR121/P PR122/P is a high-performance motor protection circuit breaker (MPCB) designed to provide comprehensive protection for electrical systems and motors in industrial, commercial, and residential applications. Part of the SACE series, it is specifically engineered to protect motors, transformers, and distribution circuits from overload, short-circuit, and ground fault conditions. This breaker is available with PR121/P and PR122/P protection types, offering flexibility and advanced functionality for various protection needs.