LIGHTNING ARRESTOR

A lightning arrester is a protective device that diverts dangerous, high-voltage electrical surges, primarily from lightning strikes, away from electrical equipment and structures by providing a low-resistance path to the ground, preventing damage by shunting the excess current safely away. It acts like a fast switch, activating during an overvoltage, conducting the surge to the earth, and then returning to its insulating state once the surge passes, protecting everything from homes to large power systems.