Electric contact materials
AssigneeSumitomo Electric Industries, Ltd.
InventorsMitsuo Osada, Nobuhito Kuroishi, Yoshinari Amano, Akira Fukui
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Abstract
The invention relates to electric contact materials for use in switches, such as moulded circuit breakers, air circuit breakers, magnetic switches, etc. The electric contact materials comprise 5-60 weight % iron group metals, 1-11 weight % graphite, 5-70 weight % refractory materials, and the residual part consisting of silver, said refractory materials being held in the state of dispersion in the iron group metals and/or silver, thereby providing welding resistance, wear resistance, and insulation resistance as well as high practical utility of low temperature rise.
Claims8
Electric contact material comprising 5-60 weight % of at least one iron group metal, 1-11 weight % of graphite, 5-70 weight % of refractory material, and the residual part consisting essentially of silver, said silver being present in the material in an amount of at least 10 weight %, wherein the refractory material is dispersed in the iron group metal and/or the silver.
Dependencies are inferred from the claim text.