公开(公告)号：US20240145199A1

公开(公告)日：2024-05-02

申请号：US18280449

申请日：2022-02-16

申请人： Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd ,  Shanghai Electrical Apparatus Research Institute

发明人： Senlin ZHANG ,  Bingqing WANG ,  Rongwei ZHOU ,  Jisheng SUN

IPC分类号： H01H71/10 ,  H01H71/02 ,  H01H73/06 ,  H01H73/18

CPC分类号： H01H71/10 ,  H01H71/02 ,  H01H73/06 ,  H01H73/18

摘要： A circuit breaker, comprising a housing, an operation assembly, an arc extinguishing device, and a transmission mechanism. The housing has, in a first direction, a bottom and a top opposite to each other, an accommodation portion recessed from the top to the bottom, and an accommodation cavity semi-surrounding the accommodation portion; a rotating wheel and a movable contact connected to the rotating wheel are provided in the accommodation cavity close to the top and adjacent to the accommodation portion in a second direction, wherein the first direction intersects the second direction; the operation assembly is rotatably and detachably connected to the top of the housing; the arc extinguishing device comprises an arc extinguishing chamber located in the accommodation cavity and close to the bottom of the housing. The circuit breaker can avoid interference between the transmission mechanism and other components while increasing the size of the arc extinguishing chamber.