High-voltage fuse with good contact

The utility model relates to a high-voltage fuse with good contact, which comprises an insulating sleeve, end covers are respectively arranged at two ends of the insulating sleeve, leads are arrangedon the end covers, a melt is arranged in the sleeve, extension springs are respectively and fixedly arranged at two ends of the melt, and an extension fixing device capable of extending out of the topsurfaces of the end covers is arranged at the free end of one extension spring; when the fuse needs to be replaced, the extension fixing device is put down, the extension spring is contracted, the end cover does not bear the acting force of the spring, the disassembly is convenient, after the replacement is finished, the extension fixing device is assembled, the extension fixing device is in goodcontact with the end cover, the extension spring is stretched, the contact between the fuse and the end cover is good, the structure is simple, and the use is convenient. 本实用新型涉及一种接触良好的高压熔断器，包括绝缘套管，绝缘套管的两端分别设置有端盖，端盖上设置有导线，套管内设