| 摘要 |
An RCCB generally comprises a current-monitoring system or device including electro-mechanical release means adapted to actuate a circuit-breaking operating mechanism upon current imbalance. The present RCCB is characterised in that the electro-mechanical release means has a rotational actuating action as opposed to the conventional axial actuating action. More specifically, the electro-mechanical release means has a construction similar to an electric motor, whereof an inter-polar gap within which a rotor of the motor rotates is sufficiently large to avoid any adverse effects of any microscopic dirt and/or moisture particles present thus avoiding failure or delay of operation of the electro-mechanical release means. |
