Name: NB8 -63 Miniature Circuit Breaker
Brand: Chint

NB8 -63 Miniature Circuit Breaker

The NB8-63 Series Miniature Circuit Breaker (MCB) offers robust overload and short-circuit protection for electrical circuits up to 63A. It features a reliable 6kA breaking capacity and versatile B, C, and D tripping curves to suit diverse load characteristics. This essential device ensures circuit safety and isolation, making it an ideal choice for residential, commercial, and industrial power distribution systems.

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FAQs

What is the main application of the NB8-63 Miniature Circuit Breaker?

The NB8-63 MCB is ideal for residential, commercial, and industrial electrical installations, providing reliable protection against short-circuit and overload faults.

How do I choose the right tripping curve (B, C, or D)?

B Curve: For residential circuits or long cable runs.

C Curve: For mixed loads with motors or lighting.

D Curve: For heavy inductive loads like compressors or transformers.

What is the rated breaking capacity?

The NB8-63 MCB has a breaking capacity of 6kA, ensuring dependable protection even under high fault conditions.

Can this MCB be installed in either direction?

Yes — the device supports top or bottom wiring, allowing flexible installation in any distribution board.

What accessories are compatible with NB8-63?

It can be paired with auxiliary and alarm contacts (XF9, XF9J) and voltage release modules (OVT-1, OUVT-1) for advanced monitoring and control.

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NB8 -63 Miniature Circuit Breaker

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NB8 -63 Miniature Circuit Breaker

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