Drop-out fuse convenient for installation of fusion tube

The utility model relates to a drop-out fuse convenient to install a fusion tube, which comprises an insulator, an upper seat plate, a lower seat plate and the fusion tube, the end part of the fusion tube is provided with an installation seat, the lower seat plate is provided with a lower bracket, a trunnion of the installation seat is hung in an installation groove of the lower bracket, and the lower bracket is provided with an upper bracket and a lower bracket. A guide plate is integrally formed at the notch position of each of the two mounting grooves in the lower bracket; and the side surfaces, close to the mounting grooves, of the guide plates are connected with the side walls, close to the guide plates, of the mounting grooves. According to the drop-out fuse convenient for installing the fusion tube, the trunnion can conveniently and smoothly slide into the installation groove under the guiding action of the guide plate, so that the fusion tube is convenient to mount and install, and the operation diffi