Mitsubishi NF-S WS-V 3P 20A Molded Case Circuit Breaker HK-KT7M3WBJWS

The Mitsubishi HK-KT7M3WBJWS is a molded case circuit breaker (MCCB) belonging to the WS-V series, NF-S standard class. This three-pole (3P) device is rated for a nominal current of 20 amperes and provides a short-circuit breaking capacity (Icu) of 5 kA at 400 VAC in accordance with IEC 60947. It incorporates a fixed thermal-magnetic trip unit that delivers reliable protection against both overload and short-circuit conditions. Front connection is made via cable lugs or busbars, allowing straightforward installation in electrical panels and distribution boards. The NF-S standard class MCCBs from Mitsubishi are widely used in industrial and commercial electrical distribution systems, offering dependable circuit protection for motor feeders, lighting circuits, and general-purpose branch circuits. The compact design of the WS-V series supports space-efficient panel layouts. This circuit breaker is suited to applications requiring consistent overcurrent protection with a moderate interrupting rating, making it an appropriate choice for secondary distribution panels and control enclosures in factory automation environments.