VACUUM CIRCUIT BREAKER Russian patent published in 2001 - IPC

FIELD: high-voltage engineering. SUBSTANCE: circuit breaker has at least one vacuum arc-control device accommodating movable contact, control crossarm, and main electrodynamic compensator which actuates movable-contact crossarm and movable contact when passing current thereby ensuring electrodynamic pressure on movable contact; it is provided with additional electrodynamic compensator controlling movable-contact crossarm by applying electrodynamic pressure in direction opposing that in which main electrodynamic compensator is acting. EFFECT: enhanced electrodynamic stability of circuit breaker and reduced burden on operating mechanism. 3 cl, 2 dwg