SWITCHING DEVICE WITH CONTROLLABLE INTERLOCKING OF CUTTING IN Russian patent published in 2002 - IPC

FIELD: electrical engineering, control over switching of electric circuits. SUBSTANCE: proposed switching device makes it possible to block unauthorized cutting in of contact system and to protect against repeat cutting in of switching device. Switching device has frame carrying contact system whose contacts are connected to output connector anchored in frame, rod of switch installed in guides and fitted with return spring, roller mounted in lower part of switch rod and moving along inclined plane of cam plate, block of cams, interlocking unit, controlling element and indicator. Interlocking unit comes in the form of eccentric with slot interacting with end face of cocking bar setting pusher in action which then transfers cams of cam system into position of switching on of contact system that is shown by indicator. EFFECT: improved functional reliability of switching device. 3 dwg