Auxiliary device for controlling the opening of a circuit breaker

摘要

The auxiliary control for opening a circuit breaker or switch includes supply terminals (2) connected to an external supply, and connection terminals (3) which can be connected together by a pushbutton (10). A release device (1) is able to send a mechanical command to the cut-out device when the a non-null voltage is applied to its terminals. The auxiliary control for opening a circuit breaker or switch includes supply terminals (2) connected to an external supply, and connection terminals (3) which can be connected together by a pushbutton (10). There are also one or more impedances (4) and a release device (1) able to send a mechanical command to the cut-out device when the a non-null voltage is applied to its terminals. The electric circuit comprising the release device (1) produces a null or near null voltage when the connection terminals (3) are connected by an electrical connection, and a non-null voltage when the supply terminals (2) are connected to an external supply. In this second case the electrical connection between the terminals (3) is interrupted. In other modes the device is able to operate with a double supply and may also be used with a three phase supply.