Glossary  >  Lightning Arrester

Lightning Arrester


A lightning arrester is a device installed to protect telecommunications systems, electric circuits, and related appliances from dangerous power surges caused by lightning strikes.

Typically, lightning arresters consist of a high-voltage terminal and a ground terminal. In the event of a potentially dangerous lightning strike, the arrester activates and diverts the lightning to the ground, where it’s safely dispersed.

In communication systems, smaller versions of lightning arresters are called surge protectors and are used between each conductor and the earth. These prevent normal currents or signals from flowing to the ground but provide a safe path for high-voltage lightning currents to safely exit a system without damaging any connected equipment.

Lightning Arrestor

Wilson 859902 Lightning Surge Protector

Note that lightning arrestors don’t actually stop lightning strikes. They limit the massive electrical surge from a lightning bolt and give it a safe route to the ground rather than through your electrical appliances.

Check out the Wilson Signal Booster Collection of Lighting and Surge Protectors.

Example of Lightning Arrester in a sentence:

"A lightning arrester protects homes, businesses, and appliances from the extreme voltage spikes of a lightning strike."

Synonyms: lightning arrestor, lightning isolator, lightning protector

Related Terms for Lightning Arrester: