SIEMENSQSA2020SPD Whole House Surge Protection with Two 20-Amp Circuit Breakers for Use Only on Siemens Panels

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.

Perfect device to add whole house surge protection.

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.

I recently purchased this product from Amazon. The item arrived quickly and was well-packaged, ensuring it was in perfect condition. The quality of the product exceeded my expectations, and it works exactly as described design and functionality are A+.Overall, I am extremely satisfied with my purchase and would highly recommend this product to others. Great value for the price!

My circuit breaker and surge protection device arrived intact in a box and sealed bag. Upon opening the packaging it appeared used. The plastic sticker that covers the center of the device and allows the leds to shine through had been completely removed and was stuck to the paper documentation. I was not able to get it off the paper without the paper staying on the adhesive. The front sticker with the breaker and model information was weathered and not fully intact. The breaker was dirty looking. I've installed plenty of the Siemens QP style single and double breakers to know what they should look like. This one just didn't look right. I went ahead and installed it as I needed the protection more than I needed it to look good.Although I can't vouch for the ability for this product to protect my electrical panel from a surge, I can say that it installs easily. The green led lights are lit when protected and mine are working as intended. The built in 15 or 20 amp circuit breakers (depending on what model you choose) mean that if it is installed where you'd normally have two 15 or 20 amp breakers above and below each-other you won't loose those circuits.Don't DIY this if you're not comfortable working in an electrical panel with potentially lethal voltages. You'll have to remove two consecutive breakers and install this in place of the two that were removed. Since the breaker is split with the surge protector between two outer breakers, the lower breaker lug may cause your black hot wire to need to be slightly longer than what you currently have. Beware you may need an extra 1" or so to make this work. You'll also need to install the white neutral wire into your panel where your neutral bus bar is located.

I have two of those, on my main and my sub.Real important, this thing needs to be the first breaker closet to the grid inlet (usually the top of the panel), where the big service wire comes in. Wires are always assumed to be hot so if you don’t know what you are doing don’t touch it!I know enough to get the job done. I have a voltage monitor and since I’ve put it in I’ve haven’t seen a surge!