NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic) Datasheet & Manual

NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

The CHINT NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic) provides comprehensive protection against overload, short-circuit, and residual current faults in AC circuits up to 400 V and 63 A. Featuring Type B residual detection and electronic tripping technology, it ensures reliable operation for both AC and pulsating DC leakage currents. With 6–10 kA breaking capacity, wide tripping curves, and compact DIN-rail design, the NB5LE is ideal for smart electrical systems, offering enhanced safety and precision for residential, commercial, and industrial power networks.

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FAQs

What is the function of the NB5LE RCBO?

The NB5LE provides residual current, overload, and short-circuit protection in one device, combining safety functions typically handled by separate RCCB and MCB units.

What makes it a Type B device?

Type B detection ensures sensitivity to AC, pulsating DC, and smooth DC residual currents up to 1000 Hz, making it suitable for modern electronic loads, EV chargers, and variable-speed drives.

What tripping characteristics does it offer?

It supports both C and D curves, allowing application flexibility—from general-purpose loads to high inrush current devices.

How durable is the NB5LE?

It delivers up to 20,000 mechanical and 10,000 electrical operations, ensuring long-term performance in demanding conditions.

Where can it be used?

Ideal for residential, commercial, and industrial systems, particularly where electronic equipment requires enhanced leakage and over-current protection, such as EV charging stations, automation panels, and renewable energy systems.

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NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

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NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

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