An overvoltage protection plug is disclosed. The overvoltage protection plug includes a protection plug body formed from a chassis and a housing and defining an interior volume, the protection plug body including an insertion portion and a handle. The overvoltage protection plug further includes a gas tube located within the interior volume, the gas tube electrically connected to metallic leads protruding through the body at the insertion portion. The overvoltage protection plug also includes a grounding plate electrically connected to a ground pin of the gas tube.