Chint 20A B Curve RCBO 30mA Type AC 10kA 1 Pole + Neutral

The Chint NB3LEU-B20 is a compact and high-performance 1 Pole + Neutral RCBO (Residual Current Breaker with Overcurrent Protection) designed to deliver complete circuit protection in a single modular device. It combines earth leakage protection, overload protection, and short-circuit protection, making it ideal for modern residential and commercial distribution boards where safety, reliability, and space-saving design are essential.

With a 20A rated current, 30mA residual operating sensitivity, and B Curve tripping characteristic, this RCBO is suitable for final circuits with low inrush current such as lighting, socket outlets, and general-purpose power distribution. The 30mA sensitivity provides enhanced personal protection against electric shock, while also reducing the risk of fire caused by earth leakage faults.

Designed as part of the NB3LEU series, this device is widely used in consumer units where combining MCB and RCD protection into one unit improves installation efficiency and system reliability.