| 摘要 |
<p>A protective device (1) for electrical networks and for electrical user devices connected to an electrical network comprises at least a first circuit breaker (2) which can be inserted between an electricity supply (4) and a load (3), switchable between a normal closed condition and an open condition to selectively interrupt the power supply to the load (3); automatic reconnection means (5), acting on the first circuit breaker (2) to automatically switch the first circuit breaker (2) to the closed condition. The device (1) also comprises a second circuit breaker (6) operatively connected between the first circuit breaker (2) and the load (3), switchable between a closed position in which the first circuit breaker (2) and the load (3) are electrically connected and an open position in which the first circuit breaker (2) and the load (3) are electrically disconnected; a monitoring control unit (7) operatively connected to the first circuit breaker (2) and to the second circuit breaker (6) at least for switching the second circuit breaker (6) between the closed position and the open position.</p> |
