High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Magnetic blowout
Patent
1996-10-28
1997-11-11
Gellner, Michael L.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Magnetic blowout
218148, H01H 3320
Patent
active
056867123
ABSTRACT:
An electrical contact assembly including a pair of first contact arms, each having a terminal end portion, a tip end portion and first contacts fixed to said tip end portions, and a second contact arm arranged opposite the first contact arms and having a tip end portion provided with a lengthened bridge contact. Either the pair of first contact arms or the second contact arm is moveable and the other one is stationary, respectively. Upon actuation of the moveable contact arm or arms, a current path is closed between the first contact arms via said bridge contact. Further, a pair of arc runner strips is provided at opposed lateral edges of either the pair of first contact arms or of the second contact arm. Each of the arc runner strips has a free end projecting toward a facing area of the second contact arm or the first contact arm, respectively. In operation, a pair of opposing magnetic fields is generated between the pair of first contact arms and also, upon contact breaking, between the occurring arcs, causing a repulsive force which moves the arcs towards the arc runner strips so that the arcs can then be extinguished.
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Codispoti Joseph S.
Friedhofer Michael A.
Gellner Michael L.
Siemens Electromechanical Components, Inc.
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