Westinghouse 457D454G28 Trip Unit

The 457D454G28 Trip Unit from Westinghouse is an industrial-duty protection module designed for industrial circuit breaker protection and power distribution systems, mounted as a breaker-protection assembly. It is classified as an AB Trip Unit with a GG4 configuration and a current rating of 800 A, delivering adjustable overload and short-circuit protection control. Commonly installed in switchgear assemblies, molded case circuit breakers, and industrial electrical distribution equipment in manufacturing and utility facilities, it is used by maintenance teams, OEM operators, and system integrators for breaker maintenance, overload protection replacement, and electrical retrofit projects. The unit is compatible with switchgear, MCC systems, and breaker assemblies, reflecting its role across heavy-duty power distribution equipment in processing plants and utility power networks.