Patent ID: 6717090
Filing Date: 2004-04-06
Classification: H01H

Abstract:
An arc quenching configuration for an electrical switching device, the electrical switching device having a dielectric material enclosure with side faces and formed from a lower part and an upper part in a plane parallel to the side faces, the arc quenching configuration comprising:a stationary contact piece; a moving contact piece; an arcing chamber for producing an arc between said stationary contact piece and said moving contact piece during a switching operation, said stationary contact piece and said moving contact piece at least partially disposed in said arcing chamber; guide rails leading from said arcing chamber; an arc splitter stack having a number of arc splitter plates and disposed downstream of said guide rails, the arc passing between said guide rails into said arc splitter stack, said arc splitter plates having a given external circumference; and at least one further plate made of an insulating material and disposed in or in and adjacent to said arc splitter stack, said at least one further plate having an external circumference corresponding substantially to said given external circumference of said arc splitter plates, said at least one further plate further having an internal recess formed therein.