Power cut-off device e.g. circuit breaker, for use on electric line, has control drive comprising flexible electric cable that assures electric conduction between mobile contact of vacuum tube and electric contact of cam

摘要

The device has a disconnecting switch (2) moved between opening and closing positions of an electric line (1) whose tap (4) includes a vacuum tube (5). A cam (10) comprises an electric contact (14), and is placed to be pushed back by the switch between the positions. The switch touches the contact while moving toward the opening position, where the switch is in the closing position. A control drive comprises a flexible electric cable (15) stressed mechanically between a movable contact (9) of the tube and the cam. The cable assures electric conduction between the mobile and electric contacts.