Name: NB1-63 Miniature Circuit Breaker
Brand: Chint

NB1-63 Miniature Circuit Breaker

The NB1-63 Miniature Circuit Breaker (MCB) is a versatile and essential component for electrical safety, providing reliable protection against short-circuit and overload currents. Designed for efficient circuit isolation and switching, it is widely used across residential, commercial, and industrial electrical distribution systems. Available with various pole configurations and tripping characteristics, this MCB offers high breaking capacity and is easily installed on DIN rails, ensuring robust and compliant electrical protection..

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FAQs

What protection does the NB1-63 MCB provide?

It safeguards circuits against overload and short-circuit conditions, automatically disconnecting faulty circuits to prevent damage and fire risks .

Which tripping curve should I choose for my installation?

B Curve: Suitable for resistive loads like lighting and heating.

C Curve: For mixed loads such as sockets and small motors.

D Curve: Ideal for circuits with high inrush currents like pumps and transformers .

Can the NB1-63 MCB be used for three-phase systems?

Yes. It is available in 1P, 2P, 3P, and 4P versions for both single-phase and three-phase systems up to 400 V .

Is the breaker suitable for harsh environments?

Yes. It operates reliably from –5 °C to +40 °C, with a robust housing rated IP20, and maintains performance up to 2000 m altitude .

What accessories can be installed?

The NB1-63 is compatible with multiple accessories like AX-5 auxiliary contacts, SHT-X3 shunt release, and UVT-X3 undervoltage release, enabling monitoring and remote control .

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NB1-63 Miniature Circuit Breaker

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NB1-63 Miniature Circuit Breaker

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