Patent ID: 6107590
Filing Date: 2000-08-22
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 and clears 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 which is connected to the at least one exhaust via the arcing chamber, wherein the at least one pressure chamber includes at least one charge of an explosive which can be ignited during an opening operation and which is converted at least partly into extinguishing gas during the explosion.