Patent ID: 8658933
Filing Date: 2014-02-25
Classification: H01H

Abstract:
1. A switching device comprising: a vacuum interrupter chamber having a first moving contact piece and a second moving contact piece, the first moving contact piece being arranged at a first end, and a fixed contact piece arranged at a second end; an isolator that isolates the first and second ends of the chamber from one another; wherein the first moving contact piece, the second moving contact piece, and the fixed contact piece form two series-connected contact arrangements with a total of two contact levels which are configured to be opened are arranged within a vacuum interrupter chamber, wherein the first moving contact piece is positively directly driven via a drive, and the second moving contact piece is driven indirectly by a spring disposed and compressible on an edge flange of the isolator inside the chamber and is configured to move synchronously or lag in at least one operating direction.