Transient voltage surge suppressor with three-way fault indication

摘要

A transient voltage surge suppressor for an electrical circuit having a hot electrical conductor, a neutral electrical conductor, and a ground electrical conductor includes a first surge suppressor connected between the hot and neutral electrical conductors, a second surge suppressor connected between the hot and ground conductors, and a third surge suppressor connected between the neutral and ground conductors; a first over current fuse connected between the hot electrical conductor and the first and second surge suppressors and a second electrical fuse connected in series between the third surge suppressor and the neutral conductor; and a visible indicator connected between the first fuse and the second fuse for illuminating only when both said first and second fuses are intact, and extinguishing when either of the first and second fuses is open.