PURPOSE: An arcing horn is provided to maintain the accurate distance by easily adjusting the distance using an insulator installed on a transmission line. CONSTITUTION: An arcing horn includes a first terminal(110), a second terminal(150) and a combination member(170). The first terminal is combined with a connection fitting connected to an insulator assembly. A first mounting hole(115) is formed on one end of the first terminal. The first mounting hole has a predetermined diameter corresponding to the diameter of the combination member. The first terminal is bent in the predetermined angle at the combination sections with the connection fitting and the second terminal.
