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Square D

Model # QO2175SB

Internet # 100202111

Store SKU # 290076

QO SurgeBreaker Surge Protective Device Takes 2 Load Center Spaces

This item has been discontinued.
The Home Depot no longer carries this specific product.

$59.88 /each


Model # QO2175SB

Internet # 100202111

Store SKU # 290076

The QO SurgeBreaker Surge Protective Device is designed as a quick plug-on unit for use in QO load centers and CSED devices. The SPD requires 2 pole spaces. This unit has 22,500 Amp Maximum Surge Capacity and has a 150 VAC line-to-ground maximum providing protection from electrical surges.

  • Equal protection to circuits and receptacles throughout home
  • Includes an LED indicator
  • Can be used in service entrance locations, CSEDs and QO load centers
  • Plug-on installation, requires 2 spaces
  • CSA- and UL 1449 3rd Edition listed

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Connection type 
Electrical Product Type 
Secondary Surge Protection 
Maximum Amperage (amps) 
22500 A 
Product Weight (lb.) 
.54 lb 
Warranty / Certifications
Certifications and Listings 
1-UL Listed,ANSI Certified,CSA Listed 
Manufacturer Warranty 
Square D warrants its QO Surge Breaker to be free from defects in material and workmanship under normal care and proper usage in a residential installation, for three years. 


Rated 4.5 out of 5 by 36 reviewers.
Rated 5.0 out of 5.0 by Simple - Peace of Mind Very easy to install. If you are comfortable installing a breaker, you can easily install this whole house surge protector. It took about 15 minutes to install. I had to move two breakers down the panel so that it could be as close to ground as possible. Given the number of computers and electronic appliances (fridge, stove, microwave, water heater, dishwasher, furnace) installing a whole house surge protector is a lot cheaper than replacing appliances or having them repaired. (Note, I still have my surge suppressor strips in place ... just in case.) May 21, 2013
Rated 5.0 out of 5.0 by Very easy to install A surge protector was suggested by the furnace repair guy.I contacted Wi. Public Service for information. This one meets Wi. code. It quickly snaps in and one wire to ground. Install it as the top breaker and keep the pig tail short as possible. Now my house is protected. I also use surge strips as recommended for more sensitive electrinics January 30, 2012
Rated 5.0 out of 5.0 by Perfect fit We found the correct breaker and we're able to replace old one easily. We definitely are not electricians and followed all safety instructions. June 30, 2015
Rated 4.0 out of 5.0 by Great product Easy to install. Worked great so far, had some serious power fluctuations from the power company and all appliances in home still working well April 21, 2015
Rated 4.0 out of 5.0 by First Line of Defense If you've got a Square D QO panel, you should have this surge breaker installed. It is the first line of defense against surges that wreak havoc on electronic circuits that are in everything from your toaster, coffee pot and refrigerator (120v) to your clothes dryer and oven (240v); this catches it all. You should still have a computer grade surge strip for your computer and AV system, but this will take care of everything else. December 24, 2013
Rated 5.0 out of 5.0 by Great for flush-mount panels. This is one of those devices that you don't notice working. You just notice when it fails. But if you have a flush-mount panel, and want whole-house surge protection, this is the only way to go. Installation is easy - if you can install a breaker, you can install this unit. You just turn off the power, attach one wire, and snap it in. Turn the power back on, remove the two blanks where the device will be, and close it up. As long as the indicator glows, everything is working. You should check the unit once a month, and after storms, to be sure it is still working. This unit will be your first line of defense. It does not eliminate the need for surge protectors at your electronic devices. They provide your second line of defense, as well as protecting from surges generated by other devices on the same circuit. One drawback with using this device is that you have to get the proper one for your panel. It is not a one-size-fits-all device. If you do not have a Square-D QO panel, it is not going to work for you. It is not going to work with a Square-D homeline panel. There is another model for them. October 5, 2013
Rated 5.0 out of 5.0 by Works perfectly. I live in Florida, and of course have plenty of thunderstorms. I know for a fact that this unit has taken some hits and sent the extra current to neutral. I live in a rural part of town where all our power lines are on poles, and we have had many storms where a few appliances got "zapped" on our street in particular (by talking to the neighbors) and my house has NEVER received a damaging surge, and I am the only one on the street that can attest to this. (Have lived here for 2 1/2 years now.) Those of you who continuously have electronics getting fried in your house due to surges, are probably having a grounding problem at your breaker panel. Have an electrician make sure your grounding bar inside your electrical panel is in good shape, and that it is connected securely to the grounding rod/rods driven into the earth next to your panel outside your house. This is key. No surge protector will work without a properly grounded electrical system. This is very common as copper corrodes especially where the grounding connection is attached to the rods at ground level. Easy fix. (Also, remember this is a "Secondary Surge Suppressor" not a "Primary" which would cost a lot more.) It does its job well. August 3, 2012
Rated 4.0 out of 5.0 by good product Looked around for this for quite a while. Easy installation December 20, 2013
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