VACUUM SWITCH Russian patent published in 1998 - IPC

FIELD: electrical engineering, manufacture of high-power apparatuses. SUBSTANCE: vacuum switch has case with contacts which are manufactured in the form of two coils connected in series and having different diameters. Coil of smaller diameter is put on current conductive bar and coil of bigger diameter is connected to arc-resistant contact and with the aid of radial jumper to coil of smaller diameter. Thanks to this current flows from center to periphery creating additional lateral field which increases switched off current in combination with series connection of coils. EFFECT: increased switched off current. 1 dwg