Key points:
- 4P (4 Poles): Protects three phases plus neutral — suitable for 3-phase installations.
- 63A: Rated current — the maximum continuous current it can safely carry.
- 10kA: Short-circuit breaking capacity — maximum fault current it can interrupt without damage.
- NXB-125: CHINT product family for modular circuit breakers rated up to 125A.
- C63,C80: Trip curve type C, 63A — means it trips within 5–10× the rated current, good for general circuits with moderate inrush currents (like small motors, general power circuits).
Use: Used in industrial and commercial electrical panels to protect circuits with moderate power loads, such as lighting, socket outlets, small machinery, or motor feeders. Does not include residual current (earth leakage) protection — for that, you would need an RCCB or RCBO.
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