| 摘要 |
The present invention relates to an automatic reset device (1) for a low voltage circuit breaker (2). The device according to the present invention is particularly suitable for use with a residual current circuit breaker, but can also advantageously be used with circuit breakers of different type, for example, thermal magnetic circuit breakers. The reset device (1) essentially comprises a servomechanism (10), a control unit (20) of the servomechanism (10), a reset lever (30) associated with the servomechanism (10) and operatively connectable to a circuit breaker (2) to assume a first and a second operating position respectively when the circuit breaker (2) assumes an open and closed configuration. The device (1) according to the invention also comprises position sensor means (7) to sense the position of the reset lever (30). The sensor means (7) generate a first position signal (101) when the reset lever (30) reaches the first operating position. The control unit (20) acquires said first input position signal (101) and generates an output close signal (111) that controls a first predetermined rotation by the servomechanism (10) to take the reset lever (30) from the first to the second operating position so that the circuit breaker (2) assumes the closed configuration.
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