Westinghouse W400 MCCB

The Westinghouse Cutler Hammer Type W Main Feeder Breaker is a 400 Amp molded case circuit breaker (MCCB) designed for main feeder circuit protection and power distribution in industrial motor control centers and switchgear. This Type W unit features a 24-inch bus length and is intended for MCC or switchgear mounted installation, delivering overcurrent and short-circuit protection in industrial and commercial environments. As a main feeder breaker, it protects feeders and provides distribution control for MCC assemblies, switchgear, and industrial distribution systems to support continuous operation in manufacturing facilities. The assembly is a molded case feeder breaker designed for replacement servicing, retrofit upgrades, MCC maintenance, and industrial electrical distribution applications. It is used in industrial electrical infrastructure to protect connected equipment from overload and fault conditions.