Internet #202562776

Model #QSA2020SPDP

Store SKU #687549

Store SO SKU #687549

20 Amp 6.5 in. Whole House Surge Protected-Circuit Breaker

  • Provides surge protection for all branch circuits
  • Contains two 1 Pole 120-Volt Circuit Breakers
  • Easy plug-on style for use with Siemens load centers
  • See More Details

Frequently Bought Together


Product Overview

This Siemens 20 Amp Surge Protected Circuit Breaker will trip when surge protection is lost to provide safe use. This circuit breaker offers a dual single-pole design and 2 LED indicator lights. By installing a Siemens Circuit Breaker and Surge Protection Device in the load center of the residence, surge protection is provided for all branch circuits.
  • Notifies of loss of surge protection by tripping
  • Comprised of a highly-effective TVSS integrated with 2 single-pole 20 Amp circuit breakers
  • 2 green LED indicator lights show when surge protection is provided
  • 150 VAC, 40 mm metal oxide varistors
  • Circuit breaker and SPD utilize Siemens-built 150-Volt AC, 40 mm, metal oxide varistors (MOV's)
  • 10 kA interrupting rating

Info & Guides

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Product Depth (in.)
3.12 in
Product Height (in.)
3 in
Product Width (in.)
2 in


Connection type
Electrical Product Type
Whole House Surge Protectors
Maximum Amperage (amps)
Product Weight (lb.)
1 lb

Warranty / Certifications

Certifications and Listings
ANSI Certified,CSA Listed,UL Listed
Manufacturer Warranty
1 year

Questions & Answers


Does this provide protection to the entire panel regardless of where it is installed in the panel? Is there an ideal location?

Asked by Mike February 7, 2018

Yes, the surge protector connects to both buss stubs, and the neutral via a wire. It will clamp the voltage to all other breakers in the panel so all the downstream circuits will be protected. This particular surge protector will trip the breaker on the circuit if the device fails after suppressing a surge. This will notify you that the protector must be replaced. The breaker function will still work once the OK light is out, but there is no surge protection on that phase.

How many breaker positions does this unit take up?

Asked by Jeff January 7, 2016

It "replaces" two breakers. Plus, it is NOT 6" wide as in many descriptions. It's 4", same size as two breakers. This replaces two 20A breakers, and each breaker is it's own circuit. So you need two separate breakers that are 20A each next to one another. They do make a 15A version. Plus, very important, the ground connection is only 8" long and must connect directly to the neutral bar. My 100A box only had one neutral bar on the right side, so I could not place it were I was hoping. It should be placed nearest the main breaker, according to research. It is a double to protect both 120V lines coming in. This cannot replace a 20A double breaker (with a bar), each breaker controls only one circuit. So it's an easy replacement. Loosen the connector screw, they are very tight out of the package. Took all of 15 min to someone that has done wiring and circuit installation.

Lightning just blew out my router and the protector light is still green. Is that normal?

Asked by Ben May 5, 2019

Please begin the warranty process through your provider of QSA2020SPDP at which time we will need some more information. If the surge came through the incoming service and the MOV in the breaker was hit, the breakers should have tripped and the LED's would not be functioning. Below is some information that will be required: 1. Confirmation that the QSA2020SPDP was connected to a 120/240 VAC circuit with a grounded neutral. 2. Confirmation that the neutral wire (white wire) of the breaker was securely connected to the neutral bar of the enclosure. 3. The breaker was turned “on” when the surge event occurred. 4. Did the breaker trip during the lightning? 5. A few pictures of the installed breaker will also help us.

If a surge occurs and destroys the surge protector, does it also cover the damage done to any ele...

Asked by garybo December 15, 2018

If your question is about the warranty, yes, QSA2020SPDP is covered by a $20,000 Warranty Program the details of which can be found in the link below.

How do you install this item

Asked by Hawk July 6, 2019

To download the instructions sheet for QSA2020SPDP please go to the link below and select "Downloads" and enter Qsa* in the search box. It will be the third document listed.

Will this fit on a GE panel?

Asked by MathiasBenji October 5, 2018

No, since modifying is not suggested in electrical boxes,(will void certification of panel and not pass inspection) the CB tabs separating the slots in a GE panel are taller/longer than a Seimens panel and will not allow seating the CB. Regular Seimens QP Dual CB do not have this design issue. See pic of all 3 units.

Does Siemens make a 15 amp surge protector? Why is this surge protector better than just a breaker?

Asked by bubba July 20, 2015

Because its a breaker ( actually 2) AND provides surge protection for everything on the box, not just the 2 circuits its attached to. I am sure there are more expensive ways to obtain whole house surge protection, with more sophisticated units, but for under $100.00 this seems good to me. I am also keeping individual electronis items protected with individual surge protection. Thus I have 2 stage surge protection.

Can this protect my AC,dryer, and Water heater which use 50 Amp breakers?

Asked by johnny April 16, 2016

No. Breakers are single pole designed to handle 20 amps each at 120V. Dryers typically use 240V so they require dole pole breaker and your dryer is 50 amps too high for a 20 amp breaker

Whole house, or individual ciruit?

Asked by PAShopper July 28, 2016

Everything on the panel it is connected to.

will this fit in a Cutler-Hammer panel?

Asked by finnroiger October 9, 2015

No, this unit is not U.L.Listed for use in a Cutler-Hammer panel. To install it in a Cutler-Hammer panel would be a code violation.

20 Amp 6.5 in. Whole House Surge Protected-Circuit Breaker - page 2

Customer Reviews

  • 43 Customer Reviews
  • 4.7 out of 5 stars overall
89% of customers recommended.
Overall Ratings
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Description does not mention this device only fits Siemens and Murray power control boxes, Siemen...
Description does not mention this device only fits Siemens and Murray power control boxes, Siemens' CBs works in other brands as do other brands on Siemens boxes, unless mentioned. Maybe a general warning of not mixing CBs in other brands for your DIY customers. If installed in the correct power boxes it is an easy, and safe installation. In other Siemens dual CBs is a statement #"Easy plug in connections in Siemens load centers and meter combos" ?? example
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The fastest and cleanest way to add whole-house protection if you have a Siemens or Murray load c...
The fastest and cleanest way to add whole-house protection if you have a Siemens or Murray load center. Having no wires is a big plus as it improves performance. Be aware that the UL 1449 spec VPRs on this unit are 700V L-N (good) and 900V L-L (great) - neither of these are advertised on product literature but the sticker on the side of the actual product shows this (see my picture). Nominal and peak current is 10kA and 40kA, respectively. Be aware that as of spring 2018 the latest surge protection standard is UL/ANSI 1449 which finally standardizes surge protector ratings. Ignore "joules" ratings - these are often inflated by manipulating the test conditions. If you want performance, focus on three things: VPR (Voltage Protection Rating - the lower the better), SCCR (Short Circuit Current Rating - the higher the better), and the Surge Spike Capacity (the higher the better). Also look carefully at how the surge protector will be installed. For every extra foot of wire between the panel and the device, you lose 175 volts of protection! As short and direct as possible gives more protection. That's why the QSA2020SPDP and the QSA1515SPDP are very good as far as voltage protection. One reviewer mentioned the lack of N-G protection but I would not worry about that unless you're trying to protect a sub panel that's far away from the main panel. Main panels do not need N-G protection. Finally, if you want absolute best performance as of summer 2018, the Siemens First Surge FS60, FS100 and FS140 (available here at Home Depot at very good prices) are the ones to look at (FS100 is the best deal). They have L-N and L-L VPRs of 600 and 900 V, respectively. BUT they are much more involved to install than this product and you'll have to buy another pair of breakers. And if you don't install them very close to your panel, you won't achieve those VPR numbers. Although I do all my own work, I went with this product as the best tradeoff between performance and ease of install.
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Response from SIEMENS Product ExpertMay 9, 2018
We may need to hire you to sell our surge protection products! Very thorough review and well written out. We are happy you are satisfied with your purchase as well as taking the time to provide in depth information on the product! SIEMENS
How do you test something that only works in an emergency ? It is a cute trick to combine a surg...
How do you test something that only works in an emergency ? It is a cute trick to combine a surge protector and two 20A (they do make a 15A) breakers in one. My small 100A service panel only had one neutral bar. So the location as one of the first breakers from the main breaker (as suggested by many sites) I could not do without moving my dryer breaker. So it's the second set on the panel. Very easy install, just remember to undo the screws before you put it in a they are gorilla tight. This took all of 15 min., but ALL house power has to go off to install any breaker. I have added breakers and wired a complete addition to my house (that passed inspection the first time) so I know what I'm doing. It is not that hard to install, having someone knowledgeable there to assist (and for safety) is a very good thing. It's not the 80s anymore. Every large electrical item anymore has a $300+ control panel. I added this whole house surge protector after replacing my double oven, even my highly discounted unit was $900, my new frig of $2300, recent $1500 for washer and dryer. Each with a control panel this breaker will protect. You can still add a UPS/Surge to computers and TVs. This does not protect again voltage fluctuations, brownouts or blackouts like a UPS can. It will protect against surges from lights flickering (wires were shorted a mile from our house) and line transformer problems in your other products using power this item is protecting.
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My product arrived by UPS an hour ago, and its installed and fuctional already, and that includes...
My product arrived by UPS an hour ago, and its installed and fuctional already, and that includes opening the box, and the plastic hardpack case the surge protector was packaged in. I cant comment on functionality, but i will assume it will do what it is suppose to do. I can only comment on installation, which was simple. One cavet- You will need to have some basic understanding of electricity and some basic mechanical common sense. After all you will be accessing the inside of your electrical panel. If that scares you, hire someone or find a friend with the capability. I was a little worried that the size of this unit was going to be larger than the combined size of the 2 breakers it will replace ( and hence be a problem fitting it on the bus, and then replacing the panel. And I would say it is "a tad" larger BUT it did not inhibit installation at all. Being a brand new unit, it took a bit of "gentle force" to get the 2 sets of black side contacts to slip over the power side bus bar, and in fact I had to pull back the 2 single 15 A breakers on its opposite side to seat the new surge / breaker. Then I snapped back in the two 15 breakers. The panel cover fit right back on without any problem. One very nice thing about this is that not only does it add whole house surge protection, it also replaces 2 adjacent breakers. My breaker box was full and I had no room for any additional breakers, but you do not need extra room. I thought i was going to need to buy a few 1/2 wide breakers to replace full width breakers in order to make room for this. I saved a lot of $ not having to do that, AND I now have two, 20 A "back up" breakers if I ever need them (great, where do i put them in a small condo with limited storage for "garage type" items!). Note: breaker boxes are unique to the manufacturer. This unit is for a Siemens box. It will not fit a GE style box, etc. I think it does overlap a few styles but make sure to check before you buy. Otherwise it will be like buying a part for a Ford and try to install it on a Chevy. And its more than just a physical fit issue. It also has to do with how the different manufactures connect the breaker electrically to the panel. Imagine trying to plug in your US style hair drier in an outlet in Germany!
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The Siemens (Model # QSA2020SPDP) was easy to install and took less than 30 minutes. Two things ...
The Siemens (Model # QSA2020SPDP) was easy to install and took less than 30 minutes. Two things that I really like about this device is 1) the circuit breakers will trip when surge protection is lost 2) installing these provides surge protection for the whole house.
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Amissville, VA 20106, USA
Excellent Product--Easy Installation--Good Protection
Quality :
Value :
For once in my life, I "lucked out" and actually possessed the "right" thing in the form of having the "correct" service box in which I could use this particular product. Normally, things seldom go that way. In this case, Siemens has created an easy-to-install INTERNAL Surge Protection Device--which, as most folks know, one cannot simply install just any old circuit breaker type component into just any service box. The manufacturers, generally, have to match--and such was the case for me. Home was built in 1995, and the electrician installed a Siemens 200-amp service box. One day recently, I went browsing on the Internet for a "whole house surge protector" when I stumbled upon this particular device. Sounded exactly like what I was looking for--and seemed easier to install than that of the other types that mount externally. While total power absorption (of this internal device) is less than that of most externally-mounted devices, ease of installation and "value" won out in my decision to choose this particular device. Therefore, I checked the make/model of my box (just to be sure mine was built by the same manufacturer), and lo and behold, it was. Bought this circuit breaker via Internet, and had it a few days later. I had actually never removed a circuit breaker before, but a few searches on the Internet yielded some good "how-to's". Further, I had several adjacent 20-amp breakers to choose from, so I isolated those circuits (and removed the panel cover) and removed the old breakers using what I had learned from the Internet--while also employing (reasonable) safety precautions. I did not secure power to the entire service panel, and even if I had done so, I knew certain bus components would still be energized even if I had secured power to the whole box. I used my Fluke to test areas--both before isolating my two circuits as well as adjacent areas I suspected would remain hot--so I knew where my "boundaries" were. I must say, it was incredibly easy to remove and install circuit breakers once you understand the physical mechanics involved. The Siemens 20-amp Surge Protected Circuit Breaker installed perfectly in the space vacated by the 2 20-amp breakers I removed. I connected my circuit's hot leads to the new breakers, and installed the neutral pigtail (integral to the new protector) to an available termination point on the neutral bus bar (cutting the wire first to keep the length minimal per directions that came with the protector. The directions were simple, adequate, and easy-to-follow, and the device fit perfectly in my service box. Switched on the circuits, and saw the green LEDs illuminate--thereby signifying protection was active. Removing the panel cover, removing the old breakers, installing the new surge protector, and wires, as well as re-installing the panel cover took less than 15 minutes. This was one of the easiest and most effective (I hope) "upgrades" I've ever done. To be honest, I won't really know how effective this device is unless it gets put to the proverbial test, but not having anything in place previously, at least, this gives me some piece of mind that some protection now exists. Thanks for making such an easy to use product.
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Plymouth, MI 48170, USA
Excellent product
I Received the product in fine time. While I was able to install it myself, I would recommend hiring an electrician. I had to move most of the breakers on one side of my panel to put the surge protector in the correct position. I am assuming that it will work as advertised.
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Used in the Whole house service panel to prevent damage...
Used in the Whole house service panel to prevent damage caused from a surge without losing breaker spaces. Great product.
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Easy install, seems to work fine...
Easy install, seems to work fine
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If it perfectly into the fuse box/ panel...
If it perfectly into the fuse box/ panel
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