MAGNETIC ACTUATION DEVICE WITH NON-MAGNET INSERT Russian patent published in 2015 - IPC H01F7/13 H01F7/16 H01H3/28 

FIELD: electricity.

SUBSTANCE: invention is referred to electric engineering, to magnetic actuation device (100) for automatic circuit breaker, in particular, for vacuum circuit breaker of medium voltage. The magnetic actuation device comprises core (101), coil (105), actuating shaft (104), the first sliding plate (103), and the second sliding plate (107). The actuation device (100) is intended for switching of the automatic circuit breaker between ON and OFF positions by movement of the first sliding plate (103) between ON and OFF positions. The magnetic actuation device includes additionally a flat non-magnet insert (PO) placed between the core (101) and the second sliding plate (107), at that the flat non-magnet insert (110) and the second sliding plate (107) are used for holding force adjustment of the magnetic actuation device (100) created by the second sliding plate (107) in OFF position, at that holding force is sufficient for holding of the second sliding force (107) in OFF position resisting to external forces acting from outside to the magnetic actuation device (100).

EFFECT: efficiency improvement.

14 cl, 5 dwg