VACUUM CIRCUIT BREAKER Russian patent published in 2015 - IPC H01H33/66 

FIELD: electricity.

SUBSTANCE: vacuum circuit breaker of external installation comprises an arcing module equipped with current taps and fixed at a base insulator mounted on the frame. An external insulator of the arcing module and base insulator is made of organosilicone rubber. The external surface of the base insulator adjoining the inner surface of the external insulator made of organosilicone rubber is ribbed. Current taps may contain current transformers placed inside the common external insulator of the arcing module. The current taps may be equipped with disc-shaped electric insulators of organosilicone rubber adjoining directly the current tap. The organosilicone electric insulators of the current taps may be made jointly or separately with the module insulator.

EFFECT: increased electric strength, thermal stability and durability of the circuit breaker.

5 cl, 3 dwg