






⚡ Surge-proof your sanctuary—because your tech deserves elite defense!
The Siemens QSA2020SPD is a 20-amp whole house surge protection device designed exclusively for Siemens panels. It integrates two single-pole breakers while occupying only two breaker spaces, delivering comprehensive surge protection across the entire electrical panel and all branch circuits. Featuring a 240V initial clamping level, robust 40,000A peak current rating, and 360/720 Joules transient energy capacity, it safeguards sensitive electronics from damaging voltage spikes. Built-in LED indicators provide real-time protection status, ensuring peace of mind with every flicker.
| ASIN | B0052MG5K0 |
| Amperage Capacity | 20 Amps |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #40,695 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #160 in Circuit Breakers |
| Brand | SIEMENS |
| Circuit Breaker Type | Standard |
| Current Rating | 20 Amps |
| Customer Reviews | 4.6 4.6 out of 5 stars (778) |
| Date First Available | August 23, 2011 |
| Global Trade Identification Number | 00040892278750 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8 ounces |
| Item model number | US2:QSA2020SPD |
| Manufacturer | Siemens |
| Material | Metal |
| Mounting Type | Plug-In Mount |
| Number Of Poles | 2 |
| Part Number | QSA2020SPD |
| Product Dimensions | 3.12"D x 2"W x 3"H |
| Size | 20 Amp |
| Style | Surge Protection |
| UPC | 040892278750 |
| Voltage | 120 Volts |
| Warranty Description | Siemens strongly recommends against the use of "used" breakers. |
H**S
Good Product
very easy installation i like it..
P**Y
Great easy addon at a low price
This is a great solution for adding surge protection without a lot of hassle or added expense. It fit our new Murray panel perfectly. (Murray is a Siemens product) There have been reviews questioning the effectiveness of this product which are simply unfounded. There have also been posts suggesting this product requires a grounded neutral bar in the box, this too is inaccurate. For anyone trying to install this product in anything but a Murray or Siemens panel forget about the warranty (whether it fits or not). The specific data sheet for this product directly states that this surge protector dumps surges across the hot and neutral wires. It says nothing about a ground wire anywhere. Also don't expect this device to protect all you equipment form every possible surge, you should always use an extra surge protector for you sensitive devices. Here is a bit more info on how products like this work and why those people saying it won't work are wrong. Inside the product is a "varistor" (it says so on the product data sheet) that is connected directly from the Hot bars(there are 2 of them) in the panel to the Neutral bar in the panel. A varistor resists all electrical flow below a specific threshold usually measured in voltage. Above that threshold (120 volts for this device) electricity starts to flow through the varistor increasing exponentially as the voltage goes up. This effectively short circuits electricity coming from any surge (usually this is from devices inside the house like washing machines ) from the hot to the neutral. Since electricity takes the path of least resistance that surge will dump back out onto the grid (unless there has been some catastrophe inside the home or something is wired wrong). Code requires panels that do not have a grounded neutral to have a separate ground wire back to the main shutoff panel where the neutral and ground are tied together so any surge coming from a grounded wire has to go back to the main panel and come into the protected panel through the neutral wire where it will be dumped onto the hot thus protecting the circuits.
D**E
Ease of install.
Installs very easily. If you are able to install a breaker you can install this.
C**E
Excellent Product! We know first hand it works...
Added whole house surge protection via this product around 2008 after taking a surge the burned out several electronic items. Was a very costly event. The original version of this product took it's final surge when a tree took out the power lines in the neighborhood this year. We had no surge damage cause this product took the hit and did its job perfectly. Some of our neighbors were not so lucky. When power was restored, the breaker had tripped (notifying us it took a surge, it was the only breaker that did trip per design) reset the breakers but the green surge protection lights were out, so we knew it had to be replaced. While waiting for this replacement to arrive, the 2 circuits controlled by the old unit worked, just without whole house surge protection. This is a great feature because the main breaker box door is in a room we do not use every day and with the panel door closed you might not notice that the surge protector is out (some other products that must be visually checked). Siemens now offers some newer products with better ratings; however, I like this design due to the built in breakers, if the lights in the master bedroom and kitchen are out but the rest of the house has power, it's a good bet that our whole house surge protector is doing its job.
J**S
Not really tested against real surges, but no problems.
No problems. I installed this about six or eight years ago to protect from line surges. None experienced so far, but the circuit works fine.
M**K
Fit well.
These fit well and offer peace of mind that my electrical system is protected. As a side note, do not try to install this if you have no experience working in the main panel.
J**P
Quick and easy install. Perfect solution for a full panel.
Originally I purchased this to go into the home's main panel. However that panel was full of 240v 2-pole breakers. You can't use this to replace an existing 240v 2 pole breaker, it can only replace two 120v single pole breakers. Instead we installed this into a sub-panel in the garage. It replaced two 20 amp single pole breakers. The electrician had it installed in 10 minutes. The device comes with an information label that is installed inside the panel to alert electricians in the future that this device is present in the panel. The two lights showing that protection is enabled are easy to see in the garage. The lights cannot be seen when installed in an outside panel, they are not super bright. The photo of our outside panel was taken in twilight. I purchased another 15 amp version of this device that we will have installed in the HVAC unit sub panel. The house and HVAC will be protected against surges when we are complete. The only circuits that won't be protected are a window air conditioner and an EV charging unit. The surge protector comes with a two year residential warranty which includes up to $20,000 damage insurance. Repairs have to be authorized by Siemens for the insurance to be applicable, the 800 number is only manned during normal business hours. I think we can take the insurance with a pinch of salt since they make it tricky to use.
C**G
Works
Works! I had been having issues with my kitchen appliances being hit by surges when our electricity would be interrupted. Since installing this device I haven’t had any problems. It was straight forward installing it, just picked a couple existing breakers and replaced them with this. Turning off the main breaker so I didn’t get frizzy hair.
A**R
I blew a number of things in the house before installing. It’s been in a few years now and I’ve never suffered damaged from surges since. Easy to install.
J**.
I bought this unit because it fits right in to my Siemens 100A power panel. It is not a separate unit like some others that has to be mounted outside of the breaker area. Some others also require a circuit breaker to be purchased anyway. Delivery took a few weeks in these pandemic times. It may have been shipped from the US and I live in Canada, which may explain some of the delay. After it was installed and power was restored to the panel, I put the 2 breakers on, but I could not see the green indicator LEDs. I had to move the plastic cover over a bit so the LEDs could shine through the holes in that cover. Only time will tell if it trips during a surge and protects against overvoltage damage.
D**.
Prefect for my home panel. Nice to have two 15A circuits available to connect loads to. Power surges fried my homes smart switches. Had to buy all new ones and added this to give a bit of protection. Time will tell if it was worth it.
D**A
Easy to install and cheap Insurance to protect all your digital equipment. We have electronically controlled boilers to heat the house and while away in the winter there was an electrical surge that tripped both of them and they wouldn't restart without being reprogrammed. We came home prior to a freeze up so this is really cheap insurance should it happen again.
L**H
I just purchased the Sieman's 20 AMP Circuit Breaker and Surge Protective Device and has it installed in our breaker panel. The installation is easy if you know what you are doing. I had an electrician do the installation in order to not void our insurance coverage.
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