FIELD: electrical engineering. SUBSTANCE: copper contact with arc-shaped slots has flat central contact section arranged on one level and flat or conical arcing section arranged on other level and built integral with the former, as well as shaped strap made of arc-resistant material and fixed with arcing section; strap thickness is 1.2 to 3 times greater than contact wear and its configuration follows contact surface; this section is made by soldering or diffusion welding of arc-resistant disk to copper base followed by contact shaping. EFFECT: improved reliability of contact operation. 3 dwg
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