METHOD FOR MANUFACTURING OF POLE TIP OF AUTOMATIC CIRCUIT BREAKER Russian patent published in 2016 - IPC H01H33/66 

FIELD: electricity.

SUBSTANCE: invention related to method for manufacturing of pole tip of automatic circuit breaker by pressing-in of external insulating sleeve (9) with insulating material, mounting of vacuum circuit breaker insert (8) inside the insulating sleeve (9), electrical connection of the insert (8) to the top electric contact (2) and bottom electric contact (3), placed in a section wall of the sleeve (9). The method comprises the following steps: pressing-in of external insulating sleeve (9), wherein only the top electric contact (2) is pressed in into the insulating material; coating of vacuum circuit breaker insert (8) with additional layer (11) made of insulating material with compensation of thermal expansion; mounting of the coated insert (8) of vacuum circuit breaker by fixing it with a threaded bolt (10) to the top electric contact (2).

EFFECT: effective manufacturing of pole tip for automatic circuit breaker containing intermediate compensating layer that ensures strong cohesion between the insert of vacuum circuit breaker and insulating material surrounding it.

14 cl, 4 dwg