top of page
  • TNS Electrical Solutions

How Do Surge Protectors Work?

In the realm of electrical systems and equipment, surge protectors stand as stalwart guardians, diligently safeguarding our valuable appliances and devices from the unpredictable wrath of power surges. Understanding how surge protectors work is paramount to appreciating their significance in maintaining the integrity and longevity of electronic gadgets.

Lighting work
The best Putney electrician: Call now!

At TNS Electrical Solutions, your trusted electrician in Putney, Wandsworth, we find it crucial to elucidate the intricacies of surge protectors. As experts in the field, we are dedicated to delivering top-notch electrical services and enlightening our customers on the technology that safeguards their investments. In this comprehensive guide, we'll delve into the inner workings of surge protectors, providing you with a clear understanding of how they function and why they are indispensable.

Defining the Surge Protector

A surge protector, often referred to as a surge suppressor or surge arrester, is a device designed to protect electrical appliances from voltage spikes or surges. These surges can result from various factors, including lightning strikes, power grid fluctuations, and even the sudden operation of high-power electrical equipment. Surge protectors serve as a barrier between your devices and these electrical disturbances.

The Anatomy of a Surge Protector

1. Metal Oxide Varistors (MOVs)

Surge protectors primarily employ a component known as Metal Oxide Varistors (MOVs). These are semiconductors with variable resistance that decrease as voltage increases. When the voltage surpasses a certain threshold, MOVs conduct electricity to divert the excess voltage away from your devices. This action is vital in shielding your electronics from harm.

2. Gas Discharge Tubes (GDTs)

In addition to MOVs, some surge protectors also integrate Gas Discharge Tubes (GDTs). GDTs operate by creating a low-resistance path for excess voltage to follow, safeguarding your appliances by diverting the surge energy.

The Surge Protection Process

Surge protectors are strategically placed between your electrical outlets and the devices you wish to protect. When a voltage surge occurs, these devices react swiftly to safeguard your equipment:

  1. Monitoring: Surge protectors constantly monitor the voltage passing through them. They remain vigilant for any unusual spikes or surges.

  2. Diverting: If a surge is detected, the MOVs and GDTs come into action. They divert the excessive voltage to the grounding wire, preventing it from reaching your devices.

  3. Absorbing: MOVs can absorb the excess energy and dissipate it as heat. This process ensures that your connected appliances remain unharmed.

Types of Surge Protectors

There are various types of surge protectors available, each catering to specific needs and budgets. The three most common types are:

1. Plug-In Surge Protectors

These are compact devices that plug directly into your electrical outlets. They offer basic surge protection for individual devices and are a cost-effective option for homeowners.

2. Whole-House Surge Protectors

Installed at your main electrical panel, whole-house surge protectors safeguard your entire home's electrical system. This comprehensive protection is essential for areas prone to frequent surges, like those near lightning-prone regions.

3. Surge Protector Power Strips

Power strips with built-in surge protection are versatile options for safeguarding multiple devices simultaneously. They are commonly used in home offices and entertainment centers.

The Importance of Surge Protectors

Surge protectors are more than just electrical gadgets; they are the unsung heroes of the modern electronic age. Here's why they are essential:

1. Equipment Protection

Surge protectors ensure that your valuable electronics are shielded from power surges, extending their lifespan and preventing costly replacements.

2. Data Preservation

In addition to hardware, surge protectors also safeguard your digital data by preventing sudden power surges from corrupting your files.

3. Peace of Mind

Knowing that your devices are protected by surge protectors provides peace of mind, especially during storms or electrical outages.

Surge Protectors: Known The Basic From Your Putney Electrician

In summary, surge protectors are your first line of defense against power surges and voltage spikes that can damage your electronic devices. By diverting, absorbing, and dissipating excessive energy, these unsung heroes ensure the safety and longevity of your appliances. At TNS Electrical Solutions, your electrician in Putney, Wandsworth, we recommend investing in surge protectors to safeguard your electronics and data, providing you with peace of mind and economic savings in the long run.

Don't leave your devices vulnerable to the unpredictable forces of nature. Equip your home or office with surge protectors and ensure the safety and longevity of your valuable investments.

Contact TNS Electrical Solutions for expert guidance now:

  • Phone: 020 3715 2919

  • Email:

  • Address: Suite 30, Parsons Green, 27 Parsons Green Ln, London SW6 4HH

Follow Us On Social Media:

Instagram: @tnssolutions

6 views0 comments


bottom of page