Will You Regret Getting Leviton 51120-1 Pane Protector?


Leviton was founded in 1906 and has long been a manufacturer of electrical appliances in the United States. And since Leviton is so well known in the electrical industry, it is logical that I give an overview of the profile of the Leviton 51120-1 panel, as requested by some visitors of our website.

Will the Leviton 51120-1 outperform the other Type 2 detainees (Square D HEPD80 | Eaton CHSPT2ULTRA | Siemens FS140) we have investigated so far? I think you’ll find out soon enough.

Leviton 51120-1 Surge Protector

Leviton 51120-1 Panel Protector, 120/240V

When it comes to protecting our home from external surges such as lightning strikes, power line maintenance, etc., and internal power supply voltages such as temporary device surges, it is crucial that you have a fully functional surge protector for your entire home.

These type 2 devices must be effective and capable of blocking harmful currents and voltages as far as possible.

Let’s start with the key features and benefits of Leviton 51120-1 and see how it will perform against the above mentioned competitors.

Core Features and benefits

UL certified according to UL 1449 3rd edition

Leviton certainly plays in the same league as its competitors for UL certification and is also on the Transition List of Overprotectors (TVSS).

Modes of protection

As far as the methods of protection are concerned, it can unfortunately not be said that the archival protector Leviton 51120-1 does the same. The type of protection is only supported for L-N / L-L. The most important ones are left neutral on the ground or lines on the ground. The absence of this critical property has certainly made my eyebrows frown.

Real-time visual display

Another common feature is the real-time visual display that shows the performance and suppression status at a glance.

Maximum shock current

Despite the fact that the MSCC of the competition is 50 kA higher than Leviton’s, this should not matter. Indeed, it is still very good within the performance ranges recommended by the IEEE.

Rated short-circuit current

Although the rated short-circuit current does not have to be equal to the rated surge current, Leviton is supplied with 10 kA. which in turn is lower than most of its competitors.

NEMA Type Speaker

It’s amazing when I first notice that the Leviton comes with a Type 1 housing. This means it is designed for indoor use. As you already know, the higher the type of housing, the more effective it is in blocking out unwanted things like water, dirt, etc.

Product warranty

Like its industry peers, Leviton offers a limited lifetime warranty on its 51120-1 Panel Defender. Don’t forget to always read the small print in the product warranty. As with many existing buyers, the warranty is generally written in the interest of the manufacturer.

Who should buy it?

This Leviton panel protector can be exactly what you need if you plan to install a lightning arrestor outside your main panel. And if the price is not a problem for you, then this panel profile from Leviton will certainly give your home a smooth appearance.

Who shouldn’t buy it?

If you are looking for a multifunctional protection system with excellent surge values and extensive protection modes, you can pass them on.

Is the price reasonable?

It is clear that the price is high given the fact that the Leviton 51120-1 has little to offer in terms of functionality and performance. If you’re not a Leviton fan, most people probably won’t get it for this price.

You can see the last prize here.

Our review of Leviton 51120-1 

Ratings – 8/10

This Leviton surgical protection device lacks some performance and protective properties. Yet this surge protector, probably due to its slim appearance, has a high price for what it has to offer.


  • UL certification according to UL 1449 3rd edition
  • Maximum impact current 50 kA
  • Rated short-circuit current 10 kA
  • Limited Lifetime Warranty


  • NEMA housing type 1 [For internal use only].
  • High price, despite the lack of features and performance

Leviton panel 51120-1 Existing Buyers Reviews 

A customer has completed the warranty claim procedure. Although it took some time, the buyer finally got a settlement agreement from Leviton. Although the amount seems to have decreased significantly, the buyer was pleased that the guarantee claim was accepted.

Minor defects – What to expect

Although it is not a fault, I would like to see higher peak currents, especially for the MSCC [Maximum Surge Current Capacity] and SCCR [Short-Circuit Current Rating]. Another missing feature is undoubtedly the mode of protection. I hope that in the future Leviton will consider adding both neutral to the ground [N-G] and linear to the ground [L-G].

Important product information and specifications

Article number : 51120-1

Item Weight: 4.2 pounds.

Packaging dimensions: 8.3 x 8.2 x 5 inches

Model number : 51120-1

Quantity of goods in packaging : 1

Certification: impeccable certification

Are the batteries on? No

Do you need batteries? No

Warranty description: 10 years Restriction

What else should one know?

Also note that this type 2 SPD does not have the cables (4 x black, 1 x white and 1 x green) needed to connect it to the panel.

Always consult a qualified electrician before installation if you have little or no electrical skills and knowledge. A certified electrician knows how to install the protection correctly based on the settings on your main panel.

Conclusion – By Experts

Judging from the Amazon reviews, it’s certainly a good product, but as I said before, if you want better features and higher ratings than what Leviton offers, you’d better get a more reliable SPD, probably at a lower price.



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