MECHANISM OF MOVABLE CONTACT OF A DOUBLE-GAP AUTOMATIC CIRCUIT BREAKER Russian patent published in 2022 - IPC H01H73/04 

FIELD: electrical engineering.

SUBSTANCE: mechanism of movable contact of a double-gap automatic circuit breaker consists of a front fixed contact (10), a back contact assembly, and a movable contact (20). A first contact (11) is located at the back end of the front fixed contact (10). The movable contact (20) is located behind the front fixed contact (10). The middle part of the movable contact (20) is connected with the lever mechanism (40) via a rocker mechanism. The movable contact (20) has a front contact end and a back plug-in end, the front contact end of the movable contact (20) is equipped with a second contact (21) interacting with the first contact (11), and the back plug-in end of the movable contact (20) is made to be plugged into a socket. The stroke of opening or closing the first contact (11) and the second contact (21) is larger than the stroke of the back plug-in end of the movable contact (20) separated from or plugged into the socket.

EFFECT: ensured high disconnecting capacity, low production cost, and long operating life.

9 cl, 4 dwg