Chint 40A B Curve RCBO 30mA 6kA 1 Pole + Neutral

The CHINT NB3LEG-40-B40 RCBO is a compact and high-performance electrical protection device designed to safeguard circuits against overloads, short circuits, earth leakage faults, and electric shock hazards. Combining the functions of an MCB and RCD into a single unit, this Type A RCBO provides reliable protection for residential, commercial, and light industrial electrical installations. Featuring a 40A rated current, B Curve tripping characteristic, 30mA sensitivity, and 6kA breaking capacity, the NB3LEG-40-B40 is particularly suitable for circuits with lower inrush currents such as lighting and socket circuits. Its compact 1P+N design saves valuable distribution board space, while the quick DIN rail mounting system ensures fast and secure installation. Built to comply with BS EN / IEC 61009-1 standards, the NB3LEG-40-B40 delivers dependable performance, enhanced electrical safety, and long-term reliability for modern power distribution systems.