A surge arrester is a protective device used in electrical systems to prevent damage caused by voltage surges or spikes. These surges can occur due to lightning strikes, switching operations, or other disturbances in the electrical network. Surge arresters are designed to divert excess voltage away from sensitive equipment, ensuring that electrical systems remain safe and operational.

Surge arresters work by providing a low-resistance path to ground when a surge occurs. They allow the excess voltage to flow into the ground, preventing it from reaching and damaging electrical components such as transformers, circuit breakers, and sensitive electronic devices.

One of the key benefits of surge arresters is their ability to protect valuable equipment from the harmful effects of voltage spikes. By preventing these surges, surge arresters help extend the lifespan of electrical systems and reduce the risk of costly damage.

Surge arresters are commonly used in power transmission lines, substations, and industrial electrical systems. They are also employed in buildings and commercial establishments to protect electrical systems from lightning strikes and other transient voltage events. Their robust design ensures reliable protection against electrical surges, contributing to the safety and efficiency of electrical networks.