10A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG-B10)

The Chint NB3LEG-B10 RCBO is a reliable protective device designed to keep electrical circuits secure and compliant. Combining residual current detection and over-current protection in one compact unit, it safeguards against overloads, short-circuits and earth leakage faults while helping to protect people and property from electric shock and fire risk.

Engineered with a 10 amp rated current, this RCBO is ideal for domestic and light commercial electrical circuits such as lighting circuits, socket outlets and small appliance feeds. It features a B-curve tripping characteristic, offering fast and accurate response to overloads typical in everyday circuits.

With 30 milliamp Type A sensitivity, the unit detects both AC and pulsating DC residual currents, providing extra protection where modern electronic equipment is used. The compact 1P + N (single pole plus neutral) configuration makes installation quick and efficient on standard DIN rails.

Built to meet rigorous standards, the NB3LEG-B10 has a 6 kiloamp short-circuit breaking capacity that ensures the unit can safely interrupt high fault currents without damage. Its robust design includes a contact position indicator and complies with BS EN/IEC 61009-1 safety norms for consumer units and distribution boards.

Compact and dependable, the NB3LEG-B10 offers peace of mind in every installation. Whether you are wiring a new build or upgrading an existing consumer unit, this RCBO gives essential protective performance in a space-saving module that supports clean, organised electrical distribution.

10A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG-B10) – Data Sheet