The ABB E3S2000 R2000 PR121/P-LSI WHR 3P is a high-performance motor protection circuit breaker (MPCB) designed to offer advanced protection for three-phase systems in high-power industrial applications. This model is part of the E3S series and provides reliable protection for motors, transformers, electrical circuits, and other critical equipment. It integrates PR121/P-LSI protection to safeguard systems against overload, short-circuit, ground faults, and thermal damage, ensuring optimal protection in demanding operational environments.