The ID RCCB'S residual current devices provices the functions of isolation, switching and earth leakage protection of electrical circuits. They have a residual current operated electromechanical release which operates without and auxiliary sourced of supply to open a circuit auto-matically in the case of an earth leakage fult between phase and earth greater than or equal to a threshold of 10mA,30mA,100mA,300mA,500mA. Current rated:16A,25A,32A,40A,63A,80A, 100A Poles:2P,4P