Mitsubishi Electric ⁠NF63-CV Molded Case Circuit Breaker 254751 3P 400V 63A

Key Product Features:
The Mitsubishi NF63-CV is a 3-pole, 400 V, 63 A economical molded case circuit breaker. Utilizing Mitsubishi Electric's latest thermal-magnetic tripping technology, it combines high interrupting power with a compact size and global certifications. It provides reliable overload and short-circuit protection for machinery, distribution boxes, and photovoltaic combiner boxes in harsh environments ranging from -25°C to +60°C.

Product Information at a Glance
| Attributes | Parameters |
| Brand / Series | Mitsubishi / NF-CV |
| Order Number | NF63-CV |
| Number of Poles / Phases | 3P |
| Rated Operating Voltage (Ue) | AC 400 V (50/60 Hz) |
| Rated Current (In) | 63 A |
| Breaking Capacity (Icu) | 10 kA (AC 400 V) |
| Tripping Characteristics | Thermal-Magnetic (TM-D) |
| Mounting Method | DIN Rail / Panel Mounting |
| Operating Temperature | -25 … +60 °C |
| Standards and Certifications | IEC 60947-2, GB 14048.2, CE, RoHS |

Technical Highlights
1. High Interrupting Power, Low Loss
10 kA The breaking capacity ensures rapid interruption of fault currents during short circuits. The optimized design of the internal bimetallic strip and electromagnetic coil reduces energy loss by 15%.

2. Compact 36 mm width

This saves 20% cabinet space compared to the previous generation NF-CW series, making it ideal for high-density switchboards and PV DC combiner boxes.

3. One-touch "visual" indication

The operating handle features a three-color ON/OFF/TRIP indicator, allowing remote confirmation of the switch status, reducing maintenance time.

4. Globally recognized certifications

IEC, GB, and CE certifications meet the one-stop compliance requirements of OEMs exporting to Europe, Southeast Asia, and the Middle East.

Typical Application Scenarios
• Industrial control cabinets: Provide short-circuit and overload protection for motors under 30 kW
• Commercial building distribution boxes: Provide distributed power distribution on each floor, achieving an economical 400 V power distribution solution
• PV AC combiner boxes: Match the output of a 50 kW string inverter

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