Patent ID: 8071898
Filing Date: 2011-12-06
Classification: H01H

Abstract:
1. A switching device, comprising: a switching shaft to mount a rotary contact link with two switching contacts and a pair of fixed contacts, the pair of fixed contacts to interact with the rotary contact link for connection to, in each case, one current path, the fixed contacts and the current paths being designed in such a way that the rotary contact link is rotatable from a closed position in the direction of an open position in the event of an overcurrent or a short circuit, the switching shaft including a transversely running cutout to mount the rotary contact link, which protrudes on both sides out of the switching shaft, the rotary contact link being connected, via at least one spring element, to the switching shaft to apply a contact force in the closed position and for the rotary contact link to remain in the open position, the rotary contact link including at least one groove-shaped longitudinal cutout, arranged within and along the transversely running cutout in relation to the switching shaft, two grooves, arranged radially opposite one another, with, in each case, a bend or arcuate profile provided in the cutout of the switching shaft, the respective two ends of said grooves being positioned radially further outward than the respective central region thereof, in each case one groove being connected to the at least one groove-shaped longitudinal cutout via a transverse bolt guided therebetween, and the at least one spring element being provided which pushes the respective transverse bolt radially outward.