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A Motor Protection Circuit Breaker (MPCB) is a device designed to protect electric motors from damage caused by overloads, short circuits, or phase failures. It combines the functions of a circuit breaker with motor protection features, such as thermal overload protection and phase failure detection. MPCBs ensure safe motor operation by automatically disconnecting power when abnormal conditions occur, preventing overheating, electrical faults, and potential damage. They are commonly used in industrial and commercial settings, providing reliable protection for motors in HVAC systems, pumps, conveyors, and other machinery.