Description

The CHINT NB3LEG-C40 Type A Residual Current Operated Circuit Breaker with Over-current Protection (RCBO) is a vital electrical safety device designed to protect both residential and commercial electrical systems. With a robust 40A rating, this single-pole plus neutral (1P+N) circuit breaker ensures reliable protection against overloads, short circuits, and electric shocks.

This RCBO features a rated residual operating current (I∆n) of ≤ 30 mA, providing critical safety against electric shock risks from direct contact with live components. The 6kA short-circuit breaking capacity enhances the device’s reliability during fault conditions, ensuring rapid disconnection to mitigate potential hazards.

Equipped with AC Class and A Class tripping mechanisms, the NB3LEG-C40 guarantees efficient response to sinusoidal alternating currents, whether they are applied suddenly or gradually. The A Class tripping also protects against both sinusoidal alternating residual currents and pulsed DC residual currents, making it suitable for diverse electrical applications.

The C Curve characteristic (5-10 In) is specifically designed for circuits with resistive and inductive loads that experience low inrush currents, providing effective overload and short-circuit protection. This functionality is essential in TN and IT systems, safeguarding both users and lengthy cables. The CHINT NB3LEG-C40 stands out as a reliable and necessary component for enhancing electrical safety and ensuring the integrity of various installations.