Mitsubishi HK-KT63WBJ 3-Pole Molded Case Circuit Breaker 32-63A

The Mitsubishi HK-KT63WBJ is a 3-pole molded case circuit breaker (MCCB) designed for electrical distribution and protection in industrial and commercial installations. It features an adjustable rated current (Ir) ranging from 32 to 63 amperes, allowing flexible configuration to match the specific load requirements of the protected circuit. The unit provides a rated ultimate short-circuit breaking capacity (Icu) equal to the rated service short-circuit breaking capacity (Ics) of 36kA at 440V AC, ensuring full protection performance under fault conditions. This circuit breaker is suitable for use in power distribution panels, motor control centers, and other switchgear assemblies where reliable overcurrent and short-circuit protection is required. The 3-pole configuration makes it appropriate for three-phase AC circuits. The HK-KT63WBJ is a direct replacement part for existing Mitsubishi electrical distribution systems, ensuring compatibility and consistent protection performance in demanding industrial environments.