Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With arc-suppression or extinguishing means
Patent
1984-12-03
1986-10-07
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
With arc-suppression or extinguishing means
200144R, 335131, H01H 930
Patent
active
046162038
ABSTRACT:
An electromagnetic contactor in which at least one pair of contacts which disengage from each other to interrupt a current are provided in an arc-extinguishing chamber defined by a partition wall of electrically insulating material. An absorbing member of porous metal is provided on the inner surface of the partition wall to absorb molten metal particles which are formed by arcing at the time of disengagement of the contacts. A shield plate of electrically insulating material is provided on the inner surface of the absorbing member, and through-holes are formed in the partition wall of the arc-extinguishing chamber and the shield plates in such a manner that the through-holes of the partition wall are non coincident in position with those of the shield plate so that the absorbing member is protected from damage.
REFERENCES:
patent: 3005892 (1961-10-01), Yarrick
patent: 4019005 (1977-04-01), Michetti
patent: 4393287 (1983-07-01), Nakano
Kakizoe Masahiro
Masuda Shigeru
Mori Teijiro
Nishizako Shizutaka
Wada Yuichi
Broome Harold
Mitsubishi Denki & Kabushiki Kaisha
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