The dropout (swing out) fuse is an expulsion type and its main function is to protect Transformers on rural distribution network. It is also particularly useful for inaccessible Sub-stations where indication of fusing is of advantage.

On blowing of fuse element, the fuse carrier hangs down vertically from the bottom contact. This is advantageous in locating the fault as hanging fuse carrier is noticeable from distance and this saves time which otherwise would be taken in investigation. Lift out the fuse carrier by means of the insulated operating rod, rewire the fuse element and swing it up the carrier and thus remake the circuit

Similarly like Dropout fuse , its main function is to protect Transformers on rural distribution network. Horn Gap Fuse Element is fi xed between two rods made of copper bent to form the shape of a horn facing upwards.