Allen-Bradley 140M-C2E-B63 Motor Protector Circuit Breaker

The Allen-Bradley 140M-C2E-B63 Motor Protector Circuit Breaker delivers thermal-magnetic protection for three-phase motors in industrial control panels, with a rated operational current of 63 A. It combines overload protection with short-circuit interruption in a compact manual motor starter form factor, helping safeguard motors and branch circuits from damage and providing safe isolation in the circuit. This 3-pole device supports voltages up to 690 V AC and features a fixed B63 rating (no field adjustment), mounting on DIN rails or panels for flexible installation in control enclosures. The trip unit is thermal-magnetic, providing coordinated protection across motor loads, and the unit offers a high short-circuit interrupt rating (model dependent) to handle fault events. Typical applications include motor control centers, pump systems, conveyors, material handling systems, compressors, HVAC units, processing equipment, and production machinery where reliable motor protection and controlled disconnection are required. Common replacements include Allen-Bradley 140M-C2E-B40 and 140M-C2E-B80, making it straightforward to upgrade or substitute existing protection in automation environments.