公开(公告)号：US11004641B2

公开(公告)日：2021-05-11

申请号：US16404050

申请日：2019-05-06

Applicant: ABB Schweiz AG

Inventor： Francisco Garcia-Ferre ,  Thomas Schmoelzer ,  Jacim Jacimovic ,  Lorenz Herrmann ,  Jakub Korbel ,  Tobias Erford ,  David Saxl

IPC: H01H50/44 ,  H01H50/54 ,  H01H50/64

Abstract: An electrical switch assembly includes a contact element to be moved towards a further contact element for generating an electrical connection; and a drive for moving the contact element; wherein the drive includes a plunger with a connection member interconnected with the contact element; wherein the plunger includes a mechanical structure with a top side to which the connection member is connection, and a bottom side opposite to the top side; wherein the drive includes a Thomas coil for moving the plunger via an electrically conducting top face, which is provided on the top side and an electrically conducting bottom face, which is provided on the bottom side. The mechanical structure includes at least one channel between the top side and the bottom side, the at least one channel extending transverse to a movement direction of the plunger. Furthermore, the mechanical structure fills less than 50% of a volume between the top side and the bottom side.