US 12,224,136 B2
Switching device
Gunnar Johansson, Västerås (SE); and Lisa Almén, Västerås (SE)
Assigned to ABB Schweiz AG, Baden (CH)
Appl. No. 17/905,517
Filed by ABB Schweiz AG, Baden (CH)
PCT Filed Feb. 4, 2021, PCT No. PCT/EP2021/052623
§ 371(c)(1), (2) Date Sep. 2, 2022,
PCT Pub. No. WO2021/175534, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 20161258 (EP), filed on Mar. 5, 2020.
Prior Publication US 2023/0123517 A1, Apr. 20, 2023
Int. Cl. H01H 33/18 (2006.01)
CPC H01H 33/185 (2013.01) 15 Claims
OG exemplary drawing
 
1. An electromechanical switching device for breaking an electric current, the switching device comprising:
a stationary main contact;
a movable main contact;
a stationary arcing contact;
a movable arcing contact, the stationary arcing contact and the movable arcing contact being arranged in parallel with the stationary main contact and the movable main contact;
an actuating arrangement configured to move the movable main contact relative to the stationary main contact between a closed position, in contact with the stationary main contact, and an open position, separated from the stationary main contact, and configured to move the movable arcing contact linearly relative to the stationary arcing contact between a closed position, in contact with the stationary arcing contact, and an open position, separated from the stationary arcing contact; and
a magnetic member arranged to generate a magnetic holding force in response to an electric current flow through the movable arcing contact when the movable arcing contact is in the closed position, the magnetic holding force acting on the movable arcing contact in a direction against the stationary arcing contact.