VACUUM SWITCH Russian patent published in 1995 - IPC

FIELD: low-voltage and high-voltage circuit-opening devices. SUBSTANCE: switch has at least one arc-control chamber 1, movable current lead 2 connected to conductor by means of hold-down mechanism provided with hold-down spring 8 and lengthwise stepped rod 16 whose stepped transition is made in the form of spherical surface; largest-diameter step is joined with movable current lead 2 through bushing 14 which is fixed on one end to movable current lead 2 and on other end it is made for gripping rod 16 by its end surface corresponding to mentioned surface of rod stepped transition. EFFECT: improved design. 1 dwg