CHINT NB1-63 AC Miniature Circuit Breaker

6kA AC miniature circuit breakers for overload and short-circuit protection in distribution boards.

6–63A · ACProduct range

AC overload and short-circuit protection
B, C and D curve options
DIN-rail distribution boards

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THE DETAILS

About this equipment

Sunlight can review the circuit design, fault level and required accessories before identifying the exact part number in your quotation. Ratings shown describe a range; not every combination is offered.

Specifications & selection details

CHINT NB1-63 AC Miniature Circuit Breaker details
Series	NB1-63
Current ratings	6, 10, 13, 16, 20, 25, 32, 40, 50, 63A
Poles	1P, 2P, 3P, 4P
Rated voltage	230V AC (1P); 400V AC (2P–4P)
Frequency	50/60Hz
Breaking capacity	Icn 6kA; Ics 6kA
Trip curves	B, C and D; selected to suit the load
Standard	IEC/EN 60898-1
Mounting	TH35-7.5 DIN rail
Protection	IP20
Size	82mm high × 75.5mm deep; 18mm width per pole
Terminal capacity	1–25mm²
Ambient reference	−5°C to +40°C; apply manufacturer derating where required

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Manufacturer information checked 3 November 2026. Model and regional variants may differ. Your written quotation identifies the equipment offered, with its applicable datasheet and terms.

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CHINT NB1-63 AC Miniature Circuit Breaker

About this equipment

Specifications & selection details