公开(公告)号：US3884541A

公开(公告)日：1975-05-20

申请号：US44929974

申请日：1974-03-08

Applicant: SQUARE D CO

Inventor： O'NAN GLENN S ,  SLICER ALLAN E ,  JORGENSEN GEORGE N

IPC: H02G5/08 ,  H01R13/60

CPC classification number: H02G5/08

Abstract: An assembly is provided to facilitate connecting of a current take-off unit to a plurality of bus bars as normally found in an electrical distribution system. The assembly includes pairs of jaw members disposed within a housing. The corresponding ends of each pair of jaw members project from the housing and clampingly engage a bus bar. The corresponding opposite ends of said pair of jaw members engage an elongated connector piece which projects from the housing and is adapted to be connected to the current take-off unit. The assembly is provided with a spring for providing adequate contact clamping pressure between the jaw members and the bus bar. An adjustable means is also provided for the jaw members for attaining a higher contact clamping pressure and thus a lower contact resistance even under severe operating loads. An insulating element substantially encompasses a portion of the pair of jaw members, a portion of the connector piece, the biasing spring, and the adjustable jaw member tightening means disposed within the housing. An adjustable adaptor member of nonconductive material is disposed within the housing and is in engagement with the jaw member tightening means whereby the latter may be manually adjusted relative to the jaw members to increase the clamping pressure thereof on the bus bar. The adaptor member has a portion thereof accessible from the housing exterior whereby manual force can be applied thereto to effect manual adjustment of the jaw member tightening means.