HIGH-SPEED DIRECT-CURRENT CIRCUIT BREAKER Russian patent published in 2007 - IPC H01H77/06 

FIELD: electrical engineering; circuit-opening devices for overload and short-circuit protection of direct-current installations and lines.

SUBSTANCE: proposed circuit breaker characterized in reduced number of sections between main armature and trip-free armature as well as in reduced number of controls has at least one movable and one fixed contacts, disconnecting spring, trip-free spring, magnetic core carrying keep-alive coil, main armature, trip-free armature, and rods. Novelty is that magnetic core has slot or hole on its longitudinal axis used to receive mentioned rods.

EFFECT: simplified mechanical design of circuit breaker.

1 cl, 5 dwg