drop-out fuse

Silicon rubber drop out fuse cutout is made of insulator, contact conductive system and fuse wire tube.  When working normally, the fuse locks the movable joint on the fuse tube, so the fuse tube can be in the closing position.  When the short circuit current make the blown fuse, the fuse tube produce arc, arc suppression of the fuse tube pipe under the action of electric arc, produce a large amount of gas, when the short circuit current through the zero, produce strong ionization, make the arc extinguishing, then activity joint release, fuse tube in the upper and lower static contact under the action of thrust and its weight, falling rapidly, forming obvious isolation clearance.