AUTOMATIC CIRCUIT BREAKER TURNING DEVICE Russian patent published in 2020 - IPC H01H71/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to an automatic switch. Rotary device of automatic circuit breaker includes multiple contact supports equipped with movable contacts, as well as rotary shaft connected to plurality of contact supports. Working mechanism brings multiple contact supports into synchronous rotation to bring movable contacts into contact state of fixed contacts and separation from the latter, whereby circuit breaker is switched on and off. Turning shaft has radial section in the form of parallelogram. Each contact support is equipped with a shaft V-shaped groove, in which a turning shaft is installed. Rotary device also includes a pressure plate equipped with a V-shaped fixing flute. V-shaped fixing chute is located opposite the V-shaped chute of the shaft. Contact supports are rigidly connected with pressure plate. Rotary shaft is fixed between shaft chute and locking chute. Shaft groove is in contact with two adjacent sides of rotary shaft, and the locking chute is in contact with the other two adjacent sides of the rotary shaft so that a plurality of contact supports are in a stable and strong connection by means of the rotary shaft.

EFFECT: disclosed is rotary device of automatic circuit breaker.

10 cl, 12 dwg