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Mitsubishi NF63-HV Molded Case Circuit Breaker
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Mitsubishi NF63-HV Molded Case Circuit Breaker

Manufacturer: Mitsubishi
Frame Current: 50A,60A,63A
Number of poles 2P,3P,4P
Rated insulation voltage Ui (V): 690

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Product Description

The Mitsubishi NF63-HV Molded Case Circuit Breaker (MCCB) is a high-performance circuit protection device designed for low-voltage electrical distribution systems. It belongs to Mitsubishi’s NF-H series, featuring a compact and robust plastic-insulated housing that ensures safe isolation of conductors and grounding components. Suitable for circuits up to 690V AC and 63A frame current, this breaker provides reliable overload, short-circuit, and under-voltage protection in industrial and commercial settings.

Standard Features

It supports applications such as motor control, power distribution panels, and equipment safeguarding, where infrequent switching and high fault tolerance are critical.

  • High Breaking Capacity: Offers up to 5 kA at 400V AC and 7.5 kA at 230V AC

  • Thermal-Magnetic Trip Unit: Integrates both thermal (overload) and electromagnetic (instant short-circuit) protection

  • Compact Design: Space-saving structure, supporting 2P, 3P, and 4P configurations

  • Advanced Arc-Extinction Technology: Utilizes PA auto gas blow and JPT gas pressure tripping

  • Durable Construction: Achieves 10,000 mechanical operations (no-load) and 6,000 electrical operations (440V AC)

  • Easy Accessory Integration: Supports modular add-ons

  • Compliance and Safety: Meets IEC 60947, CCC, and GB/T 14048 standards

Technical Specifications

ModelRated current In (A)

Rated impulse withstand voltage Uimp (kV)

NF63-HV 50A(FRMAE)10A,15A,16A,20A,25A,30A,32A,40A,50A8
NF63-HV 60A(FRMAE)60
NF63-HV 63A(FRMAE)63

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