10A B Curve Type A 2P RCBO (NB310L‑2P‑B10)

The 10A B Curve Type A 2P RCBO (SKU: NB310L‑2P‑B10) is a durable, high-performance residual current circuit breaker with over-current protection designed for modern electrical installations. Made by CHINT, this compact RCBO combines two essential safety functions in one unit: earth leakage detection and overload/short-circuit protection. It protects people and property from electric shock and reduces fire risk in residential and commercial wiring circuits.

This two-pole (2P) device delivers rated current protection at 10 amps and offers a Type A trip characteristic that responds to both alternating and pulsating direct current faults. Its B curve magnetic tripping is ideal for circuits with predominantly resistive loads such as lighting, sockets and general power circuits. It helps to reduce unwanted tripping on normal load fluctuations.

Built to comply with international safety standards IEC/EN 61009‑1, this RCBO features a 30 mA residual operating current for effective personal protection and an impressive 6 kA breaking capacity to handle fault currents without damage. The compact module clips easily into a standard 35 mm DIN rail for fast installation and fits neatly within consumer units and distribution boards.

The NB310L‑2P‑B10’s robust construction ensures reliable performance over time, while its clear contact position indicator makes it easy to verify status at a glance. Whether you are protecting lighting circuits or socket circuits in homes, offices or commercial properties, this RCBO offers dependable safety and compliance for UK electrical systems.

10A B Curve Type A 2P RCBO (NB310L‑2P‑B10) – Data Sheet