Name: NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
Brand: Chint

NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

The NB3LEU Residual Current Operated Circuit Breaker (RCBO) is an advanced electronic device that delivers integrated overload, short-circuit, and comprehensive earth leakage protection. It accurately detects residual currents (Type A and AC class) to enhance safety against electric shock and fire hazards. Available in various current ratings, this compact RCBO ensures rapid, reliable fault disconnection, making it ideal for residential, commercial, and industrial electrical installations.

Helpful Links

Blog

Explore expert insights, trends, and CHINT perspectives on the smart energy industry.

Resources

Download essential CHINT resources for your business needs.

Download Now

Have questions? Contact us for support and solutions.

Collapsed

Expand

FAQs

What makes the NB3LEU RCBO different from traditional breakers?

It combines leakage, overload, and short-circuit protection in one compact device using electronic tripping, offering faster response and improved reliability over purely thermal types.

What are Type A and Type AC sensitivities?

Type A: Detects both AC and pulsating DC leakage currents.

Type AC: Detects only sinusoidal AC leakage currents.

This ensures compatibility with various load types and system conditions.

Can this breaker handle high fault currents?

Yes. The NB3LEU offers a 10 kA short-circuit capacity, making it suitable for robust protection in both residential and commercial environments.

What installation options are available?

It can be mounted on a 35 mm DIN rail and connected via cable, U-type, or pin-type busbars, supporting flexible panel configurations.

Does temperature affect performance?

Performance is rated at 30 °C, but derating applies above that (e.g., 0.9 at 50 °C, 0.85 at 60 °C) to ensure safe operation in warmer environments.

Please enter keywords to search

Choose your country & Language

Asia Pacific

Middle East & Africa

Europe

North America

Latin America

Choose your country & Language

Please enter keywords to search

NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

Product Information

Helpful Links

FAQs

NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

Product Information

Related Products

Helpful Links

FAQs