What is the main purpose of a surge arrestor?

The main purpose of a surge arrestor is to eliminate overvoltage damage to electrical equipment. Surge arrestors are devices designed to protect electrical systems from voltage spikes, such as those caused by lightning strikes or other transient overvoltages. When an overvoltage occurs, the surge arrestor redirects the excess voltage safely to the ground, preventing it from reaching and damaging sensitive electrical equipment.

This protection is crucial in maintaining the integrity and longevity of electrical systems, as overvoltage can lead to catastrophic failure, data loss, and significant repair costs. Surge arrestors play a critical role in safeguarding infrastructure, particularly in environments prone to electrical spikes.