The ABB E3S1250 R1250 PR122/P-LSI WMP 3P is a motor protection circuit breaker (MPCB) designed for high-power motor protection and electrical systems in industrial and commercial applications. This model is part of the E3S series and features adjustable protection settings for protecting motors, transformers, and other critical equipment from various electrical faults, including overload, short-circuit, ground faults, and thermal damage. The 3P designation indicates that this model is designed for three-phase systems, which are commonly used in industrial power systems.