Mitsubishi NV63-SV 3P 40A Circuit Breaker NV63SV

Description:

The Mitsubishi NV63-SV 3P 40A is a molded case earth leakage circuit breaker (ELCB) designed for low-voltage power distribution and protection in industrial and commercial electrical systems. Commonly installed in control panels, distribution boards, and machinery, it provides protection against overload, short circuit, and ground fault conditions. Maintenance teams and system integrators use this breaker for system protection, electrical safety, and replacement of existing circuit protection devices.

Applications:

The Mitsubishi NV63-SV circuit breaker is used in industrial and commercial electrical systems requiring reliable protection against overload, short circuit, and leakage current faults. Typical applications include power distribution panels, machinery protection circuits, manufacturing equipment, and building electrical systems where safe operation and circuit protection are critical to system reliability and personnel safety.

Technical Specifications:

• Manufacturer Part Number (MPN): NV63-SV
• Product Type: Earth Leakage Circuit Breaker (ELCB) / Molded Case Circuit Breaker
• Series: Mitsubishi NV-S Series
• Number of Poles: 3P (3-pole)
• Rated Current: 40 A
• Rated Voltage: 100–440 VAC
• Frequency: 50/60 Hz
• Rated Residual Current: 30 mA (typical)
• Breaking Capacity: ~7.5 kA @ 440 VAC
• Protection Functions: Overload, short circuit, earth leakage
• Trip Mechanism: Thermal-magnetic + leakage detection
• Operation: Manual toggle switch
• Mounting Type: Panel / surface mount
• Connection Type: Screw terminals
• Insulation Voltage (Uimp): ~6 kV
• Mechanical Life: ~15,000 operations
• Electrical Life: ~8,000 operations
• Operating Temperature: Standard industrial conditions
• Weight: ~0.7–0.75 kg
• Status: Active / widely used legacy series

Common Replacements:

• Mitsubishi NV63-CV
• Mitsubishi NV63-HV
• Mitsubishi NF63-SV (MCCB non-leakage version)