Patent ID: 6163001
Filing Date: 2000-12-19
Classification: H01H

Abstract:
A circuit-breaker comprising:at least one consumable switchgear arrangement including:a first contact member and a second contact member,an arcing chamber situated between said contact members, said second contact member being shiftable relative to the first contact member along a switching axis between a closed position in which the second contact member touches the first contact number and an open position in which the second contact member is separated from the first contact member in the axial direction by an arc gap and clears the arcing chamber,a heating volume connected to the arcing chamber,at least one exhaust via which the arcing chamber is connected to at least one exhaust volume, andat least one pressure chamber connected axially to the arcing chamber and which is connected to the heating volume,wherein said at least one exhaust issues from said at least one pressure chamber and connects said at least one pressure chamber to the at least one exhaust volume.