NB1-63DC DC Circuit Breaker Datasheet & Manual

NB1-63DC DC Circuit Breaker

The CHINT NB1-63DC DC Circuit Breaker provides dependable overload and short-circuit protection for DC systems up to 1000 V and 63 A. Compact and efficient, it is ideal for photovoltaic, energy storage, and communication power applications. With 6 kA breaking capacity and C-curve tripping characteristics, the NB1-63DC ensures fast, stable protection. Built to IEC/EN 60947-2 and RoHS standards, it features dual connection capability for cables or busbars, a long mechanical life, and easy DIN-rail installation.

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FAQs

What is the main purpose of the NB1-63DC DC Circuit Breaker?

It protects DC circuits against overload and short-circuit faults, ensuring stable operation in photovoltaic, battery storage, and communication systems.

What voltage levels does the NB1-63DC support?

It is rated for DC 250 V (1P), DC 500 V (2P), and DC 1000 V (4P) systems, offering flexibility across low- and high-voltage DC applications.

What is the breaking capacity of this circuit breaker?

The NB1-63DC offers a 6 kA short-circuit breaking capacity, ensuring reliable interruption even under high fault conditions.

How long is its service life?

It delivers a mechanical life of 20,000 cycles and an electrical life of 1,500 cycles, ensuring long-term dependability in demanding environments.

Can it operate in high-temperature or high-altitude environments?

Yes. The NB1-63DC works from −35 °C to +70 °C and up to 2000 m altitude. Derating curves are available for extended altitude or higher ambient temperatures.

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NB1-63DC DC Circuit Breaker

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NB1-63DC DC Circuit Breaker

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