Westinghouse MCP431800CR Molded Case Circuit Breaker

The Westinghouse MCP431800CR is a 3-pole, 150 A molded-case circuit breaker designed for reliable motor control and electrical protection in industrial settings. It carries a 600 V rating and supports 50/60 Hz operation, with a magnetic trip that provides rapid fault interruption for three-phase circuits. The molded-case, panel-mount unit uses screw-terminal connections and is built for motor control centers and industrial panels. Commonly installed in motor control centers, conveyors, manufacturing equipment, and industrial automation panels, it supports maintenance tasks such as replacements, retrofit projects, preventive maintenance, and high-amperage motor protection upgrades. This device is industrial-duty rated and offers magnetic circuit protection for three-phase motor and branch circuits. Common replacements include HMCP150U4C, Allen-Bradley 140M-C2E-B150, and Square D FA34150.