Auxiliary device

摘要

An auxiliary device for opening the contacts of a circuit breaker associated therewith following a command electric signal, comprising an insulating case (1) which contains: connection terminals (10); an actuating device (100) which is activated by said command electric signal; a kinematic mechanism (200) for opening/closing said contacts; characterized in that said kinematic mechanism (200) comprises: coupling means operatively associated to said actuating device and to said circuit breaker; release means operatively associated to said coupling means; and in that said actuating device (100) is a piezoelectric actuating device. <IMAGE>