Mitsubishi HK-KT7M3WBK Molded Case Circuit Breaker 3P 25A WS-V NF-S Series

The Mitsubishi HK-KT7M3WBK is a three-pole molded case circuit breaker (MCCB) belonging to the WS-V NF-S standard class series. It is rated for a nominal current of 25 amperes and provides a short-circuit breaking capacity (Icu) of 5 kA at 400 V AC in accordance with IEC 60947. The breaker features a fixed thermal-magnetic trip unit that offers reliable protection against both overload and short-circuit conditions without the need for external adjustment. Front connection is achieved through cable lugs or busbars, simplifying installation in standard distribution panels and motor control centers. The compact molded case design makes the HK-KT7M3WBK suitable for low-voltage power distribution, branch circuit protection, and equipment isolation in commercial and industrial electrical systems. Its standardized mounting dimensions allow straightforward integration into switchboards that already accommodate the Mitsubishi WS-V NF-S breaker platform. The three-pole configuration supports three-phase circuits commonly found in industrial motor and machinery applications.