VACUUM CURRENT SWITCH Russian patent published in 2010 - IPC H01H33/664 

FIELD: electrical engineering.

SUBSTANCE: proposed switch comprises case separated by high-voltage insulator to make arc extinguish chamber with axial movable and fixed electrodes. Movable electrode is secured to said case by current lead and metal corrugation that separates chamber vacuum medium from ambient medium. Electrodes are furnished with circular contacts. Fixed circular contact has radial grooves arranged along the circumference to receive permanent "П"-like magnets to form magnetic system. Contact surface of circular contacts along electrodes axes are located on the level of magnet pole planes. Separating isolators are arranged between electrode and permanent magnets and between circular contact and permanent magnets.

EFFECT: increased concentration of magnetic field in gap between contacts, reduced wear and better switching characteristics.

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