SWITCH FOR SWITCHGEAR FOR ENERGY SUPPLY AND DISTRIBUTION OF ELECTRIC ENERGY Russian patent published in 2011 - IPC H01H31/32 

FIELD: electricity.

SUBSTANCE: switch (1) includes the first (2) and the second (3) contacts, each of which has bar (5, 8) of cylindrical shape. Bars (5, 8) are located coaxially to each other in close vicinity and separately. Ring-shaped sleeve (14) the inner diametre of which is larger than that of bars (5) of the first (2) and the second (3) contacts is located so that it can move in axial direction on bar (5) of the first contact (2) and partially on bar (8) of the second contact (3). At least one first contact element (7; 20) is located between surface of bar (5) of the first contact (2) and inner surface of sleeve (14). At least one second contact element (12; 21) is located and arranged so that it can be between surface of bar (8) of the second contact (3) and inner surface of sleeve (14). Switch has ring-shaped third contact (4) the inner diametre of which is larger than outer diametre of sleeve (14), which is located so that sleeve (14) can move between bar (5) of the first contact and the third contact (4). At least one third contact element (17) is located and arranged so that it can be between inner surface of the third contact (4) and outer surface of sleeve (14).

EFFECT: simplifying the construction and improving reliability.

16 cl, 9 dwg