INTERNAL GRIPPING AND BLOCKING DEVICE FOR CUT-OUT SWITCH OR CIRCUIT BREAKER Russian patent published in 2014 - IPC H01H33/12 

FIELD: electricity.

SUBSTANCE: invention relates to gripping and blocking device for cut-out switch and circuit breaker. The device coupled with cut-out switch or circuit breaker, includes a main branch (1) of electrical current circulation containing the sectional switch (4), and additional branch (6) of electrical current circulation as a branching on the main branch. The additional branch (6) contains a fixed part (8), moving part (9) and vacuum bulb (10) in the place of coupling between the fixed part and moving part. Meanwhile the device is made so that the sectional switch actuates the moving part during one passing between the disconnected position and connected position of the device and has a gripping finger (24), designed with the possibility to go be engaged with the moving part of the additional branch and to keep it immovable outside of the mentioned pass section.

EFFECT: prevention to occurrence of electrical arc at opening of the sectional switch due to use of vacuum bulb, and also in lowering of current load on the vacuum bulb at the expense of its locating in branching from the main electric circuit.

2 cl, 8 dwg