Chint NXB-63 Miniature Circuit Breaker MCB 4P 63A, 6kA Type D, 380V-415V

The CHINT NXB-63 4P 63A MCB delivers reliable overload and short-circuit protection for industrial and commercial electrical systems. Engineered for 3-phase applications, it ensures safe isolation and uninterrupted power distribution in demanding environments.  

**Technical Specifications**  

- **Parameter**       - **Value**                              - Source -  

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- **Poles**           - 4P                                     -  -  

- **Rated Current**   - 63A (selectable: 1A–63A)               -  -  

- **Rated Voltage**   - 380V~/400V~/415V~                      -  -  

- **Breaking Capacity** - 6kA (Icn & Ics)                        -  -  

- **Tripping Curve**  - Type D (high inrush tolerance)         -  -  

- **Mechanical Life** - 20,000 cycles                          -  -  

- **Certifications**  - CE, CCC, IEC 60898-1                   -  -  

- **Connection**      - Top/bottom feed, DIN rail mount        -  -  

**Applications**  

- Industrial control panels  

- Commercial building distribution boards  

- Renewable energy systems (solar/wind farms)   

**Installation Notes**  

- Mount on 35mm DIN rail (tool-free snap-on) .  

- Torque terminal screws to **2.0 N·m** for secure connections .  

- Use copper conductors with appropriate lugs .