Mitsubishi HK-KT634WK 3-Pole Circuit Breaker 45-63A 50kA at 440VAC

The Mitsubishi HK-KT634WK is a 3-pole circuit breaker designed for reliable overcurrent protection and safe disconnection in industrial electrical distribution systems. It features an adjustable rated current range of 45 to 63 amperes, allowing installation flexibility to match specific load requirements. The unit offers a rated ultimate and service short-circuit breaking capacity (Icu = Ics) of 50 kA at 440 VAC, ensuring full protection capability even under high fault-current conditions. This circuit breaker is intended for use in motor control centers, switchgear panels, and general power distribution applications where dependable circuit protection is critical. The equal Icu and Ics ratings indicate that the breaker maintains its full breaking performance and operational integrity after interrupting a fault at its rated capacity. The HK-KT634WK is a direct replacement spare part for Mitsubishi-equipped electrical installations and is suited for industrial environments that demand consistent and safe power distribution.