Westinghouse HKA3150T Molded Case Circuit Breaker Trip Unit

The Westinghouse HKA3150T is a 150 Amp, 3-pole molded case circuit breaker trip unit for KA Series systems, providing thermal-magnetic overcurrent protection in industrial power distribution equipment. It is designed for internal installation in KA Series molded case breakers and supports adjustable trip functionality, commonly installed in switchgear assemblies, motor control centers, industrial distribution panels, and commercial electrical systems that require reliable overcurrent protection. Key specifications include a 600 VAC rating, KA Series compatibility, and installation as an internal breaker trip assembly that handles breaker trip control and protection. The unit is used for breaker repair, retrofit projects, and protection upgrades in industrial and commercial power distribution. Common replacements listed are Westinghouse HKA3125T and HKA3200T, as well as Eaton KA3150T Trip Unit.