Chint NXB-63 miniature circuit breaker is designed for low-voltage distribution systems and provides reliable protection against overload,
short circuit, and isolation requirements in household, commercial, and light industrial circuits. The NXB-63 series is suitable for DIN rail installation
and is widely used in distribution boards, control panels, building electrical systems, and export projects requiring practical 1A-63A MCB solutions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Series | NXB-63 |
| Type | Miniature Circuit Breaker (MCB) |
| Standard | IEC60898-1 |
| Certification | CCC / CE |
| Major Function | Overload protection / Short circuit protection / Positive isolation |
| Rated Current | 1A – 63A |
| Rated Voltage | 220V / 230V / 240V AC (1P, 1P+N); 380V / 400V / 415V AC (2P, 3P, 3P+N, 4P) |
| Rated Frequency | 50Hz / 60Hz |
| Electromagnetic Release Type | B / C / D |
| Pole Number | 1P / 1P+N / 2P / 3P / 3P+N / 4P |
| Mechanical Life | 20,000 cycles |
| Electrical Life | 10,000 cycles |
| Rated Short-Circuit Breaking Capacity (Icn) | 6000A |
| Short-Circuit Breaking Capacity (Ics) | 6000A |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
