Mitsubishi NF-S Molded Case Circuit Breaker 3P 16A WS-V Series HK-KT7M3WBJ

The Mitsubishi HK-KT7M3WBJ (NF-S) 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 16 amperes and provides a short-circuit breaking capacity (Icu) of 5 kA at 400 VAC in accordance with IEC 60947. It is equipped with a fixed thermal-magnetic trip unit that delivers reliable overload and short-circuit protection without the need for external adjustment. The breaker features a front-connection design that accepts cable lugs or busbars, simplifying installation in distribution panels and motor control centers. The NF-S standard class is widely used in commercial and industrial low-voltage distribution systems where compact size and dependable interruption performance are required. Typical applications include feeder protection, branch circuit protection, and downstream equipment safeguarding in factory automation switchgear. The HK-KT7M3WBJ is a genuine Mitsubishi replacement part suitable for maintenance and retrofit of existing WS-V series panel configurations.