Westinghouse Cutler-Hammer HKA32250TM Magnetic Trip Unit

The Westinghouse Cutler-Hammer HKA32250TM is a magnetic-only trip unit rated for 225 A, designed for installation in compatible Type KA and HKA circuit breakers. This MAG ONLY TRIP Unit delivers instantaneous overcurrent protection by magnetic actuation, without a thermal element, making it suitable for applications that require rapid interruption of high fault currents. As part of the HKA family, the HKA32250TM is intended to replace or upgrade the magnetic trip function on KA/HKA breakers, aligning with Westinghouse/Cutler-Hammer standards for consistent protection performance. The 225 A rating indicates the operating threshold for magnetic tripping, ensuring protection is triggered when fault current reaches or exceeds this level, while integrated with the appropriate breaker frame to match system design.