High-Quality NB1L Series 1P+N RCBO Factories, Manufacturer

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High-Quality NB1L Series 1P+N RCBO Factories, Manufacturer

— 30 mA High-Sensitivity Personal Protection
In low-voltage terminal distribution, direct personal protection against electric shock is the last line of defence for electrical safety. The NB1L series 1P+N residual current circuit breaker with overcurrent protection (RCBO), with a rated residual operating current of 30 mA and an operating time of less than 0.1 seconds, rapidly cuts off the power supply the moment a person touches a live conductor or leakage current occurs due to equipment insulation damage, thereby minimising the fatal risk of electric shock to the greatest extent. The product also integrates overload and short-circuit protection, with a rated short-circuit breaking capacity of 4.5 kA. It is suitable for terminal circuits in residential, commercial and similar premises, achieving “one device, three protections” in a compact structure, providing reliable safeguarding for life and property.

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Product Description

Frequently Asked Questions (FAQ)

What is the function of the NB1L Series 2P Residual Current Circuit Breaker?

The NB1L Series 2P RCCB provides residual current protection to prevent electric shocks caused by earth leakage currents. It automatically trips and cuts off power when detecting leakage currents that exceed safety thresholds.

What does "2P" specify on this circuit breaker?

"2P" stands for 2-Pole. This design monitors both the live and neutral wires simultaneously in single-phase electrical systems, offering comprehensive protection and complete electrical disconnection.

What is the key difference between an RCCB and an MCB?

An MCB (Miniature Circuit Breaker) protects circuits against overload and short circuits. An RCCB specifically detects current leakage to ground to protect human life against electrical shock hazards.

How do I test if the NB1L Series RCCB is working properly?

Press the built-in "T" (Test) button on the front of the breaker while power is supplied. If the breaker trips immediately, the residual current mechanism is functioning correctly.

Where is this 2P Residual Current Circuit Breaker applied?

It is suitable for residential, commercial, and industrial single-phase electrical installation boards to protect circuits feeding sockets, lighting, and general electrical appliances.