AUTOMATIC CIRCUIT BREAKER Russian patent published in 2012 - IPC H01H73/48 

FIELD: electricity.

SUBSTANCE: automatic circuit breaker contains a body with a cover, a contact system divided in each pole into two parallel parts, each having a dedicated arc-extinguishing chamber, a thermal and an electromagnetic maximum current releases pole, electrically connected to each other and to the consumer joining outlets, two trip-free release mechanisms controlled via a shared handle, a bracket with a jumper strap and parallel protrusions, the bracket connecting the thermal and an electromagnetic maximum current releases to the movable contacts via flexible current leads. One of the bracket parallel protrusions represents the electromagnetic release current lead, the sections of the bracket parallel protrusions immediately adjoining the jumper strap serving for joining the movable contacts flexible current leads. The thermal release is mounted on the electromagnetic release current lead; all the current from one of the parallel parts of the contact system flows through the bracket jumper strap into the bracket protrusion whereon the electromagnetic and the thermal releases are mounted.

EFFECT: enhancement of reliability and stability of the circuit breaker electromagnetic releases tripping.

7 dwg