VACUUM CURRENT SWITCH Russian patent published in 2004 - IPC

FIELD: electrical engineering, power commutation equipment. SUBSTANCE: vacuum current switch includes arc chute and magnetic system in the form of permanent magnetic or coil put on axis of arc chute on side of any contact to form lateral-radial field. Value and structure of magnetic field are controlled with the aid of magnetic core made of ferromagnetic material with implementation of certain relation between diameter of magnet and outer diameter of ring contact. EFFECT: improved structure of magnetic field in intercontact gap which enhances cut-off capability of switch and reduces mass and size characteristics when permanent magnet is used. 10 cl, 3 dwg