Mitsubishi Electric NV63-CV 3P 30A Earth Leakage Circuit Breaker – 30A, 3‑Pole, 30mA Sensitivity, 5kA @ 400V Supplier | SIMPLYBUY
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Mitsubishi Electric NV63-CV 3P 30A Earth Leakage Circuit Breaker – 30A, 3‑Pole, 30mA Sensitivity, 5kA @ 400V
Mitsubishi Electric NV63-CV 3P 30A Earth Leakage Circuit Breaker – 30A, 3‑Pole, 30mA Sensitivity, 5kA @ 400V - Image 2
Mitsubishi Electric NV63-CV 3P 30A Earth Leakage Circuit Breaker – 30A, 3‑Pole, 30mA Sensitivity, 5kA @ 400V - Image 3

Mitsubishi Electric NV63-CV 3P 30A Earth Leakage Circuit Breaker – 30A, 3‑Pole, 30mA Sensitivity, 5kA @ 400V

ParameterValue
Product TypeEarth Leakage Circuit Breaker (ELCB)
Series / BrandWS-V / NV-C Series – Mitsubishi Electric
Model NumberNV63-CV 3P 30A
Number of Poles3-pole (3P)
Rated Current (In)30A (at 40°C ambient)
Frame Size (AF)50 AF
Rated Sensitivity Current30mA (100/200/500mA adjustable option available)
Maximum Operating Time0.1 s at IΔn / 0.04 s at 5IΔn
Rated Voltage (AC)100–440 V
Rated Impulse Withstand Voltage (Uimp)6 kV
Breaking Capacity (Icu) @ 100V AC7.5 kA
Breaking Capacity (Icu) @ 200V AC7.5 kA
Breaking Capacity (Icu) @ 230V AC7.5 kA
Breaking Capacity (Icu) @ 400V AC5 kA
Breaking Capacity (Icu) @ 415V AC2.5 kA
Breaking Capacity (Icu) @ 440V AC2.5 kA
Service Breaking Capacity (Ics)100% of Icu @ 400V AC
Trip Unit TypeThermal-Magnetic (fixed) with earth leakage element
Protection FunctionsOverload, short-circuit, earth leakage
Connection TypeFront lugs or bar connections
MountingSurface mounting (DIN rail with optional adapter)
Dimensions (W × H × D)75 mm × 130 mm × 90 mm
Net WeightApprox. 0.75 kg
Electrical Durability (with load)6,000 operations
Mechanical Durability (at no load)10,000 operations
Utilisation CategoryA
Degree of Pollution2
Standards & CertificationsIEC 60947-2, EN 60947-2, CE marking
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Product Description

The Mitsubishi NF630 series is a line of molded case circuit breakers (MCCBs) designed for robust electrical protection in industrial and commercial applications. These breakers operate in AC systems with rated frequencies of 50/60 Hz and are suitable for circuits up to 630A, supporting voltages up to 690V. They provide comprehensive protection against overloads, short circuits, earth leakage, and undervoltage conditions in distribution networks. Ideal for power distribution and motor protection, they handle infrequent circuit switching or motor starting.

Standard Features

Encased in durable plastic housings, NF630 models feature fixed mounting, manual or motorized operation, and air-arc quenching. Compliant with IEC 60947-1/2, GB/T 14048 standards, and CCC-certified, they ensure reliability in harsh environments with altitudes ≤2,000m and ambient temperatures from -5°C to +40°C.

  • Multi-Protection Functions:Integrates safeguards against overload, short circuit, earth leakage, and undervoltage

  • Versatile Configurations:Available in 3P (3-pole) and 4P (4-pole) versions for flexible phase compatibility

  • High Breaking Capacity:Offers strong short-circuit interruption, with Icu up to 1000kA and Ics up to 1200kA depending on models

  • Multiple Mounting Options:Supports front/rear terminal wiring and fixed installation for easy maintenance

  • Durable Construction:Sealed molded case ensures resistance to dust, humidity, and corrosion, with a mechanical lifespan of 10 years

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

Technical Specifications

ModelRated current In (A)

Number of Poles

NF630-CW500,600,6302,3
NF630-SW2,3,4
NF630-SEWAdjustable 300 350 400 500 600 6303,4
NF630-HEW3,4
NF630-REW3

Mitsubishi Electric NV63-CV 3P 30A Earth Leakage Circuit Breaker – 30A, 3‑Pole, 30mA Sensitivity, 5kA @ 400V

Manufacturer: Mitsubishi Electric
Model: NV63-CV 3P 30A
Type: Earth Leakage Circuit Breaker (ELCB) / Molded Case Circuit Breaker with Earth Leakage Protection
Series: WS-V / NV-C (Economy Class)
Rated Current (In): 30A
Number of Poles: 3‑pole (3P)
Rated Sensitivity Current: 30mA
Breaking Capacity (Icu @ 400V AC): 5kA
Application: Earth leakage, overload, and short-circuit protection in distribution boards and machinery

The Mitsubishi Electric NV63-CV 3P 30A is a compact earth leakage circuit breaker from the WS-V series, designed to provide comprehensive protection against earth leakage, overload, and short circuits in industrial and commercial power distribution systems. Combining a thermal-magnetic trip unit with high-speed earth leakage detection, it delivers reliable protection for personnel and equipment. The breaker features a 30mA rated sensitivity current with a maximum operating time of 0.1 seconds, ensuring rapid disconnection under fault conditions. Its compact dimensions (75mm W × 130mm H × 90mm D) and front lug/bar connection design make it ideal for panel builders seeking a space-efficient solution. Compliant with IEC 60947-2 and CE marked, the NV63-CV is suitable for global applications.[reference:0]

  • Combined Earth Leakage & Overcurrent Protection: Integrates earth leakage protection with thermal-magnetic overcurrent protection in a single compact device, reducing panel space and wiring complexity.

  • High-Speed Earth Leakage Detection: 30mA rated sensitivity current with a maximum operating time of 0.1 seconds at IΔn, ensuring rapid disconnection to protect personnel and equipment.

  • Reliable Breaking Capacity: Delivers 5kA Icu at 400V AC and 7.5kA at 230V AC, providing robust fault current interruption for industrial and commercial applications.[reference:1]

  • Compact & Space-Saving Design: 75mm width × 130mm height × 90mm depth with front lug or bar connections, ideal for space-constrained distribution boards.

  • Harmonic & Surge Ready: Designed to be compatible with harmonic and surge conditions, ensuring reliable operation in modern power environments with non-linear loads.

  • Manual Test & Reset: Features a mechanical test button for periodic verification of earth leakage function and a manual reset mechanism for easy operation and maintenance.

  • Global Compliance: Certified to IEC 60947-2 and EN 60947-2, CE marked, with a pollution degree 2 rating suitable for worldwide industrial applications.[reference:2]

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