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Low-voltage Circuit Breakers

Low Voltage Circuit Breakers(LVCBs)

Mitsubishi low voltage circuit breakers create a future of the electrical equipment.

For over a half of a century Mitsubishi low voltage circuit breakers meet the needs of market. Including the WS-V series equipped with a new breaking technology, Mitsubishi Low Voltage Circuit Breakers have various lineups depending on the electric power market and the machinery.

Product List

  • Products as the main circuit protective device to make electrical equipment multifunctional.


    • • Air Circuit Breakers (ACB) AE-SW
  • Products for the protection of an overload, short-circuit basically.


    • • Molded-Case Circuit Breakers (MCCB) NF
    • • Motor Protection Breakers NF
  • Products for the protection of an overload, short-circuit and earth-leakage basically.


    • • Earth Leakage Circuit Breakers (ELCB) NV
    • • Motor Protection Breakers NV
  • For small ampere branch circuit, products for the protection of an overload, short-circuit (MCB) and earth leakage (RCCB/RCBO) basically.


    • • Miniature Circuit Breakers (MCB) BH-D, BH-DN
    • • Residual Current Circuit Breakers (RCCB) BV-D
    • • Residual Current Circuit Breakers with Overload Protection (RCBO) BV-DN
    • • Isolating Switches KB-D
  • Products also suitable to install inside the equipment by a small size.


    • • Circuit Protectors (CBE) CP
  • Circuit Breakers mainly used for Photovoltaic power generation system.


    • • Molded Circuit Breakers for DC use NF-HD
  • Mandatory products for overcurrent protection of North American countries.


    • • UL 489 Listed Molded Case Circuit Breakers NF-U
    • • UL 489 Listed Molded Case Circuit Breakers with Ground Fault Protection NV-U
  • Products for the detection of information of a circuit - it may be support energy saving of the system.


    • • Molded Case Circuit Breakers with Measuring Display Unit NF with MDU
  • Products to be more suitable for the particular application.


    • • Instantaneous tripping Circuit Breakers
    • • Isolation Switches DSN
  • Products suitable for any panelboards and control boards by small size.


    • • Circuit Breakers for Control board NF-FA
    • • Circuit Breakers for Control board NF-FAU, FHU
    • • Circuit Breakers for Panelboard NF-KC
  • Products suitable to add the earth-leakage protection to existing systems.


    • • Earth Leakage Relays NV-Z
  • Products to extend the performance of a breaker by installing it in/on the breaker.


    • • Internal Accessories AL, AX, SHT, UVT
    • • External Accessories Handle, TC, HL, MD
    • • Breaker Testers
  • Calculation and selection software for low-voltage circuit breakers.


    • • MELSELECT
    • • MELSHORT 2
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