Westinghouse MCP431550R Molded Case Circuit Breaker

The Westinghouse MCP431550R circuit breaker (Part Number MCP431550R) is a 3-pole molded‑case device rated for 150 A at 600 VAC, designed for industrial motor control and electrical protection in demanding environments. It uses a magnetic trip protection mechanism for short circuits and overcurrent events and mounts in panels with screw terminals. The trip mechanism delivers fast protection while minimizing nuisance trips in heavy-duty applications. Commonly installed in motor control centers and industrial panels, it supports applications across conveyor systems, manufacturing equipment, HVAC systems, pump controls, packaging machinery, process automation, and material handling, making it suitable for OEM control assemblies requiring reliable three‑phase protection. Industrial duty rated, it protects motors and branch circuits in 50/60 Hz three‑phase networks, with enclosure compatibility for switchgear and distribution equipment. A common replacement in the field is Eaton HMCP150U4C.