Circuit breaker

The NID RCCB S residual current devices provide the functions of isolation, switching and earth leakage protection of electrical circuits. They have a residual current operated electromechanical release which operates with- out any auxiliary source of supply to open a circuit automatically in the case of an earth leakage fault between phase and earth greater than or equal to threshold of 10 mA , 30mA,100mA,300mA or 500mA.