Westinghouse Electric Corporation HKB3225 Circuit Breaker

The Westinghouse HKB3225 is a 3-pole, 225 A, 600 V AC thermal-magnetic circuit breaker designed for industrial power distribution and motor protection. It provides overcurrent and short-circuit protection for 600-volt three-phase circuits and is commonly installed in switchgear assemblies, motor control centers, and commercial electrical panels. With a panel- and switchgear-mounted installation, this device is suited for industrial electrical protection systems in manufacturing facilities, commercial electrical infrastructure, industrial automation, utility distribution equipment, and motor control applications. The HKB3225 features a thermal-magnetic trip mechanism for dependable fault interruption and is compatible with switchgear and motor control centers. Common replacements include Eaton HKB3225, Cutler-Hammer HKB3225, and Westinghouse HKD3225F. Maintenance teams, electricians, and facility operators use it for aging protection equipment replacement, system upgrades, and preventative maintenance of power distribution infrastructure.