Vacuum circuit interrupter contacts and shields

Details Vacuum circuit interrupter contacts and shields Vacuum circuit interrupter contacts and shields

H - Electricity

01

H

H01H 33/66 (2006.01) B22F 3/00 (2006.01) H01H 1/02 (2006.01)

Patent

CA 2054058

A powdered metallurgical procedure for forming copper-chromium contacts and copper-ferrous material shields for use in vacuum circuit interrupters. The copper chromium contacts include a specific copper-iron non-abutting section, and an abutting layer preferably of copper-chromium with a layer thickness that constitutes about 50% of the total thickness of the contact which constitutes the abutting section of the contact struc- ture. The shield for the contacts, are preferably formed of copper-ferrous material and "X" in which 1%-50% is ferrous material, and "X" = chromium 0% to 30% and ferrous material plus "X" is less than 60% of the total shield.

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