LOAD-BREAK SWITCH-FIXED FUSE HYBRID DEVICE Russian patent published in 2008 - IPC H01H33/76 

FIELD: electrical engineering.

SUBSTANCE: load-brake switched-fixed fuse hybrid device provides the possibility of replacement of fusible element at work station and includes arc extinction chambers fastened on lower bridge of fixed frame, while socket contacts are fastened on upper bridge of said frame. Housings of fuses are installed on a movable bar that is located on the releaser and connected with the driving rod. The bar is installed in such a manner as to be able to move between upper and lower bridges of the frame. Upper fixed contacts of fuses interact with socket contacts, while lower movable contacts of fuses are connected with conductive contact rods with arc extinction sections that interact with contact systems of arc extinction chambers. The conductive contact rods have springs of fuse switching-off installed on them in contracted state. Switching-off springs of load-break switch are installed in contracted state between upper bridge of the frame and the movable bar.

EFFECT: extension of functionality as well as simplification of design and operation.

3 dwg