A thunder arrestor (also called a lightning arrester) is a protective device used in electrical and lightning protection systems to safely divert lightning strikes and surge voltages away from buildings, equipment, and people.
Description: A thunder arrestor is installed at the highest point of a structure or along electrical lines to intercept lightning or high-voltage surges. When lightning strikes, the arrestor provides a low-resistance path, directing the electrical energy safely to the earth through a grounding system, thereby preventing damage.