| 摘要 |
The invention relates to a circuit arrangement for a residual-current circuit breaker comprising a detection device (10) for a residual current in a supply network (12). A conditioning circuit (20) for the residual current is preferably connected downstream of the detection device. The arrangement also comprises an energy storage circuit (30), which is charged in accordance with the detected residual current, a trigger (40), which monitors the charged state of the energy storage circuit (30) and a contact unit (50) for generating a tripping voltage pulse for a tripping element (60) for an isolator of at least one consumer that is fed by the supply network (12). According to the invention, the trigger (40) causes the contact unit (50) to generate a tripping voltage pulse for the tripping element (60), once the energy storage circuit (30) has attained a predetermined charged state, (set charged state) and the circuit arrangement is provided with a second trigger (40'), which blocks the contact unit (50) until the energy storage circuit (30) has attained an additional predetermined charged state, (minimum charged state). |
