What is Horn Gap Fuse? Where it is used? December 15, 2017 by drei DWQA Questions › Category: Switchgear and Protection › What is Horn Gap Fuse? Where it is used? 0 Vote Up Vote Down drei asked 6 years ago 1 Answers 0 Vote Up Vote Down cluer answered 6 years ago Horn gap fuse is fixed between two rods bent to form the shape of a horn facing upwards.It is also called as HG fuse in short.It is used on 11 KV side of DTC (dist tr center) for protection against overload for each phase. You are welcome to read more Important Interview Questions and MCQs.