The NB3LEG Residual Current Operated Circuit Breaker (RCBO) is an advanced electronic device combining overload, short-circuit, and earth leakage fault protection for comprehensive electrical safety. It offers enhanced protection against electric shock and fire hazards and provides precise circuit control and reliable fault disconnection. With various current ratings and B/C tripping curves, this versatile RCBO is ideal for safeguarding electrical installations in residential, commercial, and industrial environments, especially where modern electronic equipment is present.