Can automatic high -tension fuse that covers end cover

The utility model relates to a can automatic high -tension fuse that covers end cover, including insulation support, the sleeve pipe both ends are provided with the end cover respectively, are provided with the wire on the end cover, overlap the intraductal fuse -element that is provided with, and the fuse -element both ends are provided with the link respectively, and the end cover inboard also is provided with the link, has articulated extension spring between the link on fuse -element and the end cover, this fuse all is provided with extension spring at fuse -element both ends, and an extension spring's free end is hung and is covered the back in one end, and it is intraductal that the fuse -element lies in the cover, and another stay cord spring is hung on another end cover, and firm lid is on the sleeve pipe under extension spring's effect for the both ends lid, and such fuse only needs just alone can change, change efficient, low in labor strength, the risk is little, convenientoperation. 本实用新型涉及种能自动盖端盖