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Siemens FS140 Whole House Surge Protection Device Rated for 140,000 Amps

  • Based on 1,467 reviews
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Availability: Only 6 left in stock, order soon!
Fulfilled by Future Imports Inc

Arrives Sunday, Sep 27
Order within 10 hours and 54 minutes
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Features

  • FirstSurge Surge Protective Devices (SPDs) are Type 2 and UL / cUL 1449 listed, meeting designated protection requirements
  • FirstSurge is constructed using our commercial grade NEMA 4X enclosure allowing for indoor or outdoor installations
  • FirstSurge Pro provides 140,000 Amp of surge current capacity per phase
  • Compatible with any brand of load center and breakers
  • Enclosure rated for type 4 outdoor, and can also be installed inside the load center
  • 10 year product and connected equipment warranty

Description

Siemens believes today's residential surge protectors come up short when protecting today's modern home filled with smart appliances and electronics. This is why we developed our first surge commercial class total home surge protectors. When there is a problem, Siemens first surge takes the guesswork out of knowing when it is time to be replaced. What will you see and hear when this occurs? audible alarm: beeps green led(s): extinguish red service light: flashes first surge is also ground referenced monitoring-equipped notifying if you have a rare safety hazard exists due to a compromised electrical system neutral to ground bond. What will you see and hear when this occurs? audible alarm: beeps green led(s): remains lit red service light: flashes.

Brand: SIEMENS


Battery Cell Composition: Other Than Listed


Product Dimensions: 10"D x 6"W x 4"H


Voltage: 100 volts


Color: Gray


Voltage: 100 volts


Amperage: 10 A


Form Factor: Tower


Output Current: 10 A


Output Voltage: 100 volts


Power Plug Type: No Plug


Connector Type: USB


Wattage: 1200 watts


Frequency Range: 50/60 Hz (± 3 Hz)


Item Dimensions D x W x H: 10"D x 6"W x 4"H


Item Weight: 2.7 pounds


Item Dimensions: 10 x 6 x 4 inches


Battery Cell Type: Other Than Listed


Enclosure Material: Iron


Specification Met: UL 1449


Brand: SIEMENS


Model Number: FS140


UPC: 804766055560


Manufacturer: Siemens -HI


Number of Items: 1


Unit Count: 1 Count


Global Trade Identification Number: 60


Built-In Media: Whole House Surge Protector


Item Type Name: Pro 140kA Whole House Surge Protection Device


Mfr Part Number: FS140


Color: Gray


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • No Doubt, this is the Best Whole-House Surge Protector Available
Style: Surge Protection
SEARCHING: I went on a search to find whole-house surge protection products that would help protect the electrical appliances and other components and equipment in my home. I live in rural Missouri and our electricity provider is a Co-Op Utility that basically buys and resells electricity to customers outside the City grid. Our experience with this Co-Op has shown us that the power is not nearly as stable as "big-city" electric utilities. We regularly get power fluctuations, and occasional blackouts, brownouts, brown power, and rolling blackouts. The internal relays in my UPS for my computer go nuts (switches back and forth to battery power) about every other day due to power fluctuations. To complicate matters, we live in the mid-west where we get our fair share of lightning storms that are pretty spectacular to watch, but not so friendly on our home electricity. OTHER PRODUCTS TRIED: I tried competing products such as Delta, Intermatic, and a couple others including ones offered by the Co-Op utility, but I can't say that I have been very well protected. In the past year, a lightning storm out here took out my new refrigerator, my clothes washer, and my pressure tank for my well-water supply system. I just purchased a new HVAC heating and cooling system that I don't want to end up being fried, so I started my search. With a lot of products out there, the worst thing is that you get a false-security that you are protected just because you have some box or device connected to your electric panel and so you feel like all your expensive electrical items are safe. And then there are those store-bought surge protection plug strips that have a "joules" rating and an "insurance coverage guarantee." These may start out fine and offer limited protection to whatever is plugged into them, but in less than a year out here where I live, they begin to fail because frequent spikes in the electricity cause a degradation in the surge protection. Plus, I have yet to hear from anyone who has successfully made an insurance claim and collected money for damage to their electrical items that were plugged into those type of surge protectors. I'm not saying that they never provide protection, just that they can wear out fairly quickly and you may not be aware of it unless you have one that has a protection indicator light. Also, the amount of electrical surge protection offered by those plug strips may not work well against an intense surge, even when the plug strip is brand new. SIEMENS FS140: I stumbled across the Siemens FirstSurge FS140 Whole House Surge Protection Device Rated for 140,000 Amps and it impressed me, at least on paper to begin with. It is a UL 1449 listed, Type 2 surge protective device (SPD) with a limited 10-year warranty for the FS140 and connected equipment in your home. It provides a 900-volt protection for line-to-line surges (L-L), and it provides a 600-volt protection for line-to-neutral (L-N), line-to-ground (L-G), and neutral-to-ground (N-G) surges according to UL 1449 3rd Edition, Voltage Protection Ratings. It has a voltage clamp-down response time of less than 1 nanosecond, which is extremely fast and needed for protection of your sensitive electronic equipment. One of the things I like about this product is that it has 3 levels of protection status notification so that you always know whether your protected or not: (1) it has an audible alarm, (2) it has protection status LEDs, and (3) also has a red service LED (to notify you when the electric service or wiring is compromised). The device is well built with quality in mind; not a cheap plastic material that is used in some of the competing products. This device has a NEMA 4X indoor and outdoor rated enclosure. It's a very robust product. Its dimensions are roughly 8-1/4" long, by 3-5/8" wide, by 3" high. It has a threaded conduit connection port on the enclosure for 3/4" threaded conduit or connectors. INSTALLATION: For the installation of this device, a licensed electrician is recommended unless you are completely comfortable and knowledgeable with electrical panels, circuit breakers, and wiring practices for residential applications. A suitable volt meter is also recommended. I decided to call Siemens to ask for their input on the installation, and I was very impressed with the level of knowledge, expertise, friendliness, and willingness to help. The Siemens engineer (Ken) was nothing short of brilliant. His input allowed me to confidently and expertly install the FS140 so that it would perform the way the manufacturer intended. PERFORMANCE: After successfully installing the FS140, feeling very proud of its looks, and seeing the status lights showing correctly protected, I was still a little skeptical about how well the device would perform against surges. Coincidentally less than a week later, a thunder storm rolled thru this area and we had a resulting power failure from a lightning strike that was less than a half-mile away. After about 30 minutes the power returned (surges involved in that too), and the FS140 lit up showing a protected status. More importantly, nothing in our house including our new HVAC system was harmed by the electric fluctuations due to the nearby lightning storm. I not only feel protected, but this device has proven its worth and I am sure it will pay for itself considering the cost of repair bills from electric equipment and appliances that would otherwise be damaged from unprotected electrical surges. Thank you Siemens. EDIT: [...] The above link is a very good article on Whole-House Surge Protection Devices written by a third party reviewer where he evaluates a hand full of products. Although the Siemens product is not included in the review because it is a newer product than when the review was written, the Siemens FS140 outperforms all of those reviewed and would have come in first place. Also, I found in another third-party article that two-tiered protection where you have service panel surge protection and point-of-use surge protection (plug-strip type) is a very effective way to fully protect your electrical items. Most peoeple aren't aware that a fairly large percentage of damage also comes through phone lines and cable/satellite conections as well so anything connected to those (e.g. TVs, cable and satellite receivers, modems, routers, cordless and corded phones) are exposed without additional protection on the coax lines and modular phone lines. ... show more
Reviewed in the United States on November 10, 2015 by Amazon Customer

  • Excellent product but not a DIY project unless you know what you are doing
Style: Surge Protection
Purchased/Installed the FS140 whole house surge suppressor in July 2021. Been working flawlessly since. Just sits there silently doing its job. Whole house protection at the service entrance is great piece of mind. I do note the price is up substantially since 2021 (thanks covid) but still an outstanding value in my opinion. However, not a DIY project if you are afraid of electricity or uncomfortable with working INSIDE a breaker box. Requires the addition of a dedicated two pole (240v) 20A circuit breaker (not included - purchase separately for your brand of panel) to your existing service panel so (1) make sure you have free space and (2) you will have to access the inside of the panel so BE CAREFUL. The instructions recommend the shortest run possible for the wiring from breaker to the device as well as keeping it close to the neutral and ground bars in the panel. Also, although the instructions did not specify distance from the main breaker, I made sure to put mine first in line (my main comes in the bottom of the panel and the breaker for the surge protector is first on the bottom right as circled in photo) as I figured it could not hurt to do so. This location was also close to ground/neutral in the panel and gave me a knockout close by to mount the FS140 device. Had to move some other breakers to accomplish this so again DO NOT ATTEMPT if you don't know what you are doing. If you are at all unsure of your ability to DIY this I recommend you google and read the installation instructions first to make sure you understand what is expected. PROs Small footprint Easy to Mount Clear Instructions Impressive protection specs Feels substantial/well built Visible LEDs report on protection status CONs May (likely) require additional materials to install Not for your average DIYer Would I purchase again? YES - even at its current price it is cheap protection and great piece of mind. Far better than relying on surge suppression strips of dubious origin and quality. ... show more
Reviewed in the United States on December 26, 2023 by Dave K.

  • very well made
Style: Surge Protection
I installed this recessed in drywall with the very expensive but very well made mount plate, it looks great this was the only place I could access due to design of my panel - avoid the always live service entrance side for safety!!!! . Anyway this SPD is very highly rated (google it and you get a lot of info), it appears to be very well made the wire is decently long about 3 ft (but make as short as you can per instructions) and heavy 10ga wire much more solid than other items I considered. Yes it is pretty expensive BUT when you think of all the devices in your home the cost is worth it. About a year ago I lost several items in a power outage after a storm and have been considering adding a SPD since.... but after replacing my AC unit (not power related, just worn out), I decided this was something I needed now as we have frequent storms and a few outages every year - think about the hit everything takes as power comes back on all over the area at the same time. Whole home surge protection is standard on new homes so adding it to an older home makes good sense - will it save my stuff???? who knows but much better than nothing. The first one I received was damaged (stuff rattling around inside it) but Amazon replaced it within one day and the installation went very smoothly after that but a quick word of caution: If you dont know how to install this hire someone - it requires some skill and opening then working inside your service panel and cant say this enough: this can be very dangerous IF you touch the wrong thing it can kill you be very careful!!!! great item and Im very happy with my choice ... show more
Reviewed in the United States on May 20, 2023 by A. bottorff

  • Absolutely does the job of protecting the house, definetly worth the investment.
Style: Surge Protection
I thought I was doing everything right in trying to protect my many electronic devices in the house from shorts, power surges, lighting spikes etc. Boy was I a sucker! I suffered a electrical surge that took out the T.V., Sewell splitter, Comcast cable box and my 4 month old Anthem MRX 720. The surge apparently came through the cable connection. SO as I researched how do keep this from happening again I came upon the Seimens FS140. FOund out about dirty power and how the power coming in flucuates between 119 volts to 125 volts. How, everytime the refrigerator comes on, or any electrical motor for that matter creates a surge and this can cause issues over time. The FS140, somehow cleans that up. I'm sure I don't understand like some of you, but if you can, you owe it to yourself and piece of mind to get this installed. The guide on the Seimens site shows the US devided in to three different regions based on surge activity and lightening strikes. The FS140 is rated for region three-the most active. I'm on the border of region 1 & 2 so of course chose the big guns. Overkill, maybe but lately we've had, it seems bigger and more violent thunderstorms with lots of lightening. Of course, I guess I'm more attuned. So much so, that if I'm home and a storm happens, EVERYTHING except lights gets turned off and or unplugged. I had my FS140 installed by a certified electrical contractor. The service panel had room to install a double throw breaker and he was done in 15 minutes. He charged me $155 bucks and all is well. Since install, my APC's protecting my Macs in my office/study have had considerably less events and the two Furman's protecting my new LG OLED and Marantz are not being taxed. Last note, I've advised my insurance company of the changes and they are considering writing that info in to the policy. Seriously, it's worth it. ... show more
Reviewed in the United States on September 13, 2020 by tws

  • Not old, not refurbushed, great NEW product!
Style: Surge Protection
First off, a lot of the 1 and 2 star reviews are claiming this is a refurbished or very old product. This is not true. Understand what you are getting and how to read the date code on the side of the unit. This is a "Pro Pack", meaning it does not come in the nice consumer packaging and just ships in a box with a printed manual. Then the manufacture date code, the one on mine is 2024. Obviously mine was not made in the future, what that means is it was made the 24th week of 2020. So that would mean it was made in the beginning of June in 2020. Now that that's out of the way, the actual review. This product was fairly easy to install as long as you have understanding of electrical wiring. Since you are wiring this at the entrance of electricity to your house the main wires are going to be live. So make sure you know what you are doing and do it carefully. This took me less than an hour to completely install with a little prep work, I needed to get the right connections to mount it on my panel. The smallest punch-out that I had was a 1 inch, the end of the First Surge is a 3/4 inch. So I bought a 3/4" offset, a 1" to 3/4" reducing bushing and a 1" rigid water-tight hub. Screwed it all together and mounted it on the side of my panel. After that, I had to move one of the circuit breakers down so I could put the new 20 amp 2-pole circuit breaker as close to the entrance of power as I could. I routed the wires and connected the ground and neutral wire to the buss bars. I cut off excess wire as to have the wire as short as possible. I connected the 2 black wires to the circuit breaker (also cutting off excess) and attached the breaker to the top most position. I turned on the breaker and the 2 green lights lit up on the unit. The instructions that came with it were really helpful. I can't really comment on how well it works, only time will tell with that. But the quality of it and the ease of installation is great! This gives me a lot more peace of mind when those storms come rolling through. Highly recommend this product! ... show more
Reviewed in the United States on September 20, 2020 by The Chad

  • Excellent Unit, Installation Could Be Easier
Style: Surge Protection
1) Specifications are excellent, especially for the money. Don't "save" $100 on a cheaper unit. They're definitely helpful, but not fast enough to prevent all the surge getting through and a big surge will smoke them. A larger unit is the way to go if you want to be "one and done". 2) It installs with a 20amp, 2 pole, (240v) breaker. This confusing since they stress it is 120v, but they mean 120v per phase, even though it is 240v between the phases. What you order is right for the US. 3) Installation is a bit of a hassle, if they would just put a straight male thread with a nut and a gasket it would be so much easier. Installation: a) The thread in the end is a 3/4 NPT TAPERED plumbing pipe thread. THE STRAIGHT THREADS ON AN ELECTRICAL NIPPLE MUST BE FORCED IN, resulting in questionable sealing and strength, as well as real risk of cracking the connection. b) There is an option if you're a "do it right" kind of guy, which is a bulkhead fitting with a 3/4 NPT pipe fitting female thread, a big nut and a sealing gasket, available on Amazon. c) The 1-3/8" hole required is a standard "knock-out" diameter. Knock-outs are pre-cut holes filled with metal held in with 2 small welds. Despite the name, DO NOT KNOCK THE PLUG OUT WITH A HAMMER AND SCREWDRIVER (don't ask how I know). This will bend the face and open up gaps in the larger holes. Pro-tip: Just drill two small holes (about 3/16") through the welds and the plate In the hole will be easily removed. d) Put pipe dope or caulk on the threads of a 3/4" close pipe nipple and install in the unit and bulkhead connector. e) Insert the bulkhead connector into the panel wall, it's a good fit, so wiggle it a bit as it goes it. f)The nut has reverse, or left hand thread so tighten backwards. g) You will be tempted to hold the unit while you tighten the bulkhead nut, but it will loosen the pipe thread because of the reverse threads. Hold the outside bulkhead nut to tighten the inside nut. If you can find a bulkhead with standard righthand-threads, it would be simpler. h) I put a ring of caulk around the inside and outside of the hole, just to sure it sealed and prevent the nut from ever loosening. ... show more
Reviewed in the United States on July 11, 2019 by Cal

  • Reduces worry
Style: Surge Protection
We live in an area prone to frequent power interruptions that could cause line surges. All of our electronics are plugged into surge protector devices, but all of our compressor devices are not. The problem is that surge protectors wear out over time and there's no way of telling when this might occur. Everything might look normal on a failed surge protector but there's actually no protection. Periodically swapping out these devices has been our only recourse. This Seimens FS140 was the answer. To start with, it has a 10-year warranty, better than almost all others on the market. The unit is weatherproof if you need to install it outside and is very well made. There are a pair of green lights indicating that the device is functioning properly. If one or both turn red, you know it's time to replace the unit. Professional installation is recommended, but we installed it ourselves. It requires a double 20-amp breaker (so it connects to both legs on the panel) to which you attach the two black wires. The green wire must be connected to the ground bus bar. Depending upon local codes, the white wire goes to the same ground bus bar or a separate neutral bus bar. The unit must be attached to the electrical panel box with the wires passing through one of the knockout holes. The company sells a separate kit to directly attach to the outside of the box, but we ran it through a short section of conduit instead. Get the kit; it's easier. Now we have robust surge protection for the whole house, including refrigerators and freezers. Do not rely on this device to protect your appliances from lightning - it's not designed for this and only can absorb common power company line surges. It also is supposed to protect against in-house surges caused by heavy motors and compressors turning on and off. ... show more
Reviewed in the United States on July 2, 2021 by robosolo

  • Purchased After Researching Options For Hours
Style: Surge Protection
Read hundreds of reviews on Amazon and electrical related reviews in articles. Came to conclusion FS140 was the best for my house in Florida. Unfortunately after having 2 installed on 2 200A panels in my garage, electrician informed me when they built house 7 years ago, they broke off lines from meter for pool spa and 1 of the HVAC units. If I wanted maximum protection on those units, in addition to in panel surge suppressors, I would need 2 more FS140 units. Thought they were so good after seeing electrician install 2, ordered 2 more. Electrician took shortest path to minimize length of wires, but appreciated that Siemens provided about 24 inch leads for problematic installs. Some other manufacturers have cut leads to as short as 16 inch, which cause issues on some installs. I did notice Install instructions recommend 20A circuit breaker, but manufacturers info on Amazon says up to 30A breaker . Called Siemens Tech Support. Someone answered in 3 minutes, and passed me through to Stephanie who covered Florida. I got her VM, but she returned my call within 30 minutes. Stephanie explained that a 20 or 30A circuit breaker is equally OK, that there is no benefit surge protection wise or warranty wise to using a 20 or 30. She did say they send out for formal testing with a 20A as testing body specifies a 20A. I was impressed with friendly, knowledgeable customer service. I dropped the unit I had been paying on with FPL monthly for 7 years. I believe these Siemens FS140 units, with additional surge suppressors for electronics, cable etc, offer me a much better level of protection. I am very pleased. ... show more
Reviewed in the United States on December 3, 2020 by JOHN T.

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