Do You Really Need Surge Protectors With High Joules Rating?

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Surge Protectors with High Joules RatingHave you ever felt overwhelmed with the huge variety of brands and models to choose from whenever you are shopping at the malls?

I do.

It gets even worse when I am buying stuff online, be it groceries, gadgets, jewelry, etc.

Shopping for a surge protector is no different.

Not only do we have to wade through the hundreds and thousands of different brands and models, but we also have to battle with terminologies like what is Joules rating?

Should you get one with a low or high joules rating?

I feel your pain. The same happened to me when I ordered my very first surge protector device online, I ordered it “blindly” and I got the wrong one for what I needed.

Fortunately, I was able to return it for another model that fits my needs.

I hope you will not make the same mistake as I did and hope the information presented below is of help to you.

What are Joules and Joules Rating in Surge Protectors?

If you have never owned a surge protector before, it is very unlikely that you will know what is Joules.

Joules is a unit measurement of energy (Watt-seconds).

For example, 400 joules is like leaving a 400-watt vacuum cleaner on for one second.

The joules rating is a way to measure how much energy a surge protector can absorb and protect your devices from.

Imagine it like a sponge that soaks up water. The bigger the sponge (or higher the joules rating), the more unwanted energy (like from a lightning strike or power surge) it can soak up before it reaches and potentially damages your electronics, like your computer, TV, or gaming console.

But a higher joules rating does not mean better protection against sudden spikes in electricity.

Moreover, the amount of Joules inside a power surge suppressor decreases every time it takes a “blow” from power surges from lightning strikes or transients.

Do You Need Surge Protectors with High Joules Rating?

The answer is NO.

Having a surge suppressor device with a high joules rating in your home or office is NOT an indication of better protection against power spikes from lightning strikes.

Go for one with a low Let-through voltage or Response time instead.

Let-through voltage which is also known as Voltage Protection Rating or clamping voltage. It is the maximum amount of voltage that is permitted into a surge protection device before it triggers its surge protection function and allows only normalized current to pass through to attached loads (your computers or electronic devices).

Response time is the amount of time it takes for the surge protection to kick in – it is usually measured in nanoseconds.

A longer response time heightens the risk of connected devices getting damaged by power surges.

✓ Best Practice: Try to get a surge protector with a response time of one nanosecond or less.

Having a surge suppressor device with a high joules rating in your home or office will not provide better protection against transient events like a lightning strike.

It is NOT a performance measurement of a surge protection device’s ability to minimize the force of a power surge.

3 Important Features

While there are other factors to consider when choosing the most suitable surge protector for your home, it is crucial to at least check for both the Response time, Joules rating, and the Let-through voltage/Clamping voltage the next time you buy one.

If you own any high-end equipment or appliances at home, I would strongly recommend that you get a surge protector with a high Joules rating, fast response time, and a clamping voltage of no more than 400 volts.

Surge protectors from Cyberpower, Tripp Lite, Belkin, and APC are a few brands well known for having good response time, high joules rating as well as decent clamping voltage threshold.

Our Pick of Top 3 Surge Protectors

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Belkin 12-Outlet Pivot-Plug Power Strip Surge Protector w/ 8ft Cord - Ideal for Computers, Home Theatre, Appliances, Office Equipment and more (4,320 Joules)

[1] Belkin 12-Outlet Pivot-Plug Power Strip Surge Protector w/ 8ft Cord

  • 12 outlet surge protector power strip with 8 feet/2.4M cord
  • Space-saving combination of rotating outlets (8) and stationary outlets (4)
  • Safeguards computers, appliances, home theater and office equipment from potentially damaging power surges
  • Backed by a lifetime warranty and protected by $300,000 connected equipment warranty
  • Specs: 4,320 Joule energy rating / 6,000v maximum spike voltage / AC 15A, 125V, 1875W
Check Price

Tripp Lite 10 Outlet Surge Protector Power Strip, 8ft Cord, Tel/DSL Protection, RJ11, & Dollar 150,000 Insurance (TLP1008TEL)

[2] Tripp Lite 10 Outlet Surge Protector Power Strip

  • Protect any electronic device from power surges & spikes
  • Powerful AC SURGE SUPPRESSION WITH TEL/DSL Protection: This surge suppressor Features ten NEMA 5 15R outlets, four of which can accommodate transformer plugs
  • Safety First High Joule Rating Conforms to UL 1449 Safety Standards
  • Convenient options for placement in any environment: 8 feet ac power cord provides to ability to reach distant outlets
  • Lifetime warranty, $150,000 insurance: lifetime limited warranty and $150,000 ultimate lifetime insurance covers any connected equipment damaged by a power surge
Check Price

Tripp Lite Isobar 10 Outlet Audio/Video Surge Protector Tel/Modem/Coax/Network 8ft Cord Right Angle Plug, $500,000 Insurance (HT10DBS)

[3] Tripp Lite Isobar 10 Outlet Audio/Video Surge Protector

  • Surge Protector with ten outlets and coaxial/tel/modem/Ethernet protection is ideal for your entire home/business theater installations Protect high-definition TVs, satellite and A/V receivers, DVD/CD players, and more, from dangerous power surges, spikes & line noise
  • This surge suppressor offers complete AC protection with ten total NEMA 5-15R outlets, which are arranged in two exclusive isolated filter banks that prevent equipment connected to one bank from interfering with equipment connected to another
  • An integrated 12A circuit breaker protects all outlets and shuts down connected equipment in the event of an overload Diagnostic LEDS confirm when you are grounded and protected at a glance 3840 joules mean maximum protection for your equipment Conforms to current UL 1449 3rd Edition safety standards
  • This black surge suppressor provides ten total outlets, and color-coded labels above outlets to help identify connections at a glance
  • Lifetime Limited Warranty and $500,000 Ultimate Lifetime Insurance cover any connected equipment damaged by a power surge
Check Price

Do You Need High-End Surge Protection Devices?

According to Coherent Market Insights, the surge protection market is expected to reach 4.11 Billion in 2024 and that means that more people are expected to invest in better surge protection systems, thanks to the continuous emergence of high-end electrical and home appliances like home theaters, LCD TVs, PCs and so on.

Do you need surge protectors that are capable of protecting the entire house? If so, you may want to check out our reviews of whole-house surge protection brands and models.

If you are like me who has invested thousands of dollars into high-end electronic devices and kitchen appliances, I am sure you will want to invest in a reliable surge suppression system with high joules rating that can protect all of your treasured electronic and electrical investments.


Marc Edwards
Marc Edwards

Marc Edwards is the co-founder of GagtheSurge and is actively involved in writing review and information articles for the site. He loves traveling and has been to most of the countries across the four major continents. Besides working and traveling, he also enjoys jungle explorations and deep sea diving.

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