High-voltage switches with arc preventing or extinguishing devices inventions 04/06

20060086693 - Arc extinguisher assembly for mould cased circuit breaker: An arc extinguisher assembly is provided for a mould cased circuit breaker capable of reducing time for arc extinguishing and preventing contacts from being damaged due to a back flow of an arc. To this end, the arc extinguisher assembly for a mould cased circuit breaker provided with a fixed...

20060086694 - Apparatus and method for use in circuit interrupters: The present invention provides improved and more efficient methods and apparatus for maintaining and/or adjusting over-travel gaps and contact wipe portions in operating rod assemblies of circuit interrupters. According to one embodiment of the invention, a circuit interrupter comprises a fixed electrical contact; a moveable electrical contact; an operating rod...

20060081560 - Vacuum circuit breaker, vacuum interrupter, electric contact and method of manufacturing the same: An electrode having an electrical contact for a vacuum interrupter, wherein the electrical contact contains silver, copper and tungsten carbide, and wherein an amount of silver is 24 to 67% by weight, an amount of copper is 5 to 20% by weight and the balance being tungsten carbide, a ratio...