Siemens FS140 Review for 2021 – You Might Regret Not Getting it Earlier


Last Updated on January 11, 2021 by Marc Edwards

A previous client of mine contacted me recently and hence the writing of this Siemens FS140 review. He told me a lightning strike came by few nights ago and his surge protection strip and all connected electronics were mostly fried.

I told him having a Type 3 SPD at home is not enough to block such powerful voltage spikes and recommended that he gets a Type 2 SPD for the whole house. Type 2 SPD is a type of hardwired SPD to be setup at the main breaker panel.

Type 3 Surge Protection Devices Are Not EnoughSiemens FS140 Whole House Surge Protection Device Rated for 140,000 Amps

Few days later, he called and asked if he should get Siemens FS140. In view of that, I decided to do a review of this whole house surge protector from Siemens. This is mainly for the benefits of future visitors who may be looking for a product review for the same brand and model.

In my line of work, I often hear similar horror stories from clients and friends. These people are frequent victims of huge power surges that caused expensive damage to costly electrical appliances in their home. I hope this review will help someone make a smarter buying decision and better protection their home against destructive current surges.

Check Out The Latest Price Here


Core Features and Benefits

Versatile Protection for Residential and Commercial

I am always impressed with Type 2 surge suppressors which are highly versatile. Just like FirstSurge, it is able to work with any load center brand. It really does not matter where you install it. This versatile surge protection device will start its surge protection mission once it is powered up and connected to a 30A or less, 2 pole circuit breaker.

3 Stage Commercial Grade Notifications [Visual + Audio Notifications and Alerts]

What sets Siemens FS140 from Siemens apart from its competitors is it’s commercial class three stage notification diagnostic. [LEDs, Audible Alarm, and Red Flashing LED].

As we know all surge protection devices are sacrificial after it blocks away damaging currents and voltages.

Hence  when it is no longer able to provide any more surge protection, it will immediately alerts you for replacement through its notifiers like audible alarm and red flashing LEDs.

Less Than 1 Nanosecond Respond Time

Having a less than 1 nanosecond responding time could only means that your electrical appliances at home are in safe hands. When a nasty power surge come in through the load center, it will get blocked almost immediately.

NEMA Type 4 Enclosure

This whole house surge protector can be intended for both outdoor and indoor installation due to its commercial grade NEMA Type 4 enclosure. Nema Type 4 enclosure is able to protect against what is listed below to a certain extend.

  • Splashing water
  • windblown dust and rain
  • rain or damage from external ice formation

A Decade of Product Warranty

FS140’s 10 Year Limited Product Warranty and Connected Equipment Warranty. This should give you a better peace of mind than most of its competitors in the industry. đŸ™‚

Who Should Buy it?

If you need a robust, reliable and performance ready whole house surge protection device, this FirstSurge device from Siemens will definitely fit the bill. There is no doubt that it has a big size and price point is a little on the high side. But the surge protection features and benefits you are getting are definitely worth more than the replacement cost of your fried electronic devices and appliances.

Who Shouldn’t Buy It?

This big size surge protection device [10 x 6 x 4 inches ] from Siemens may not fit in your breaker panel. Be sure to take measurement of your panel before getting it. So yes, obviously this is not for you if you have a panel that is unable to fit the size dimensions of Siemens FS140.

There is another reason why it may not be for you. Extra cost will be needed to buy both the Coaxial System Protection and Phone System Protection devices separately. If you do not have budget for these extra devices, you may want to give FS140 a miss as you will not be having a holistic protection against surges for the entire house.

Is the Price Reasonable?

In our opinion, the price of Siemens FS140 is a little on the high side for most homeowners. But if you consider the features and benefits you are getting from this surge devices like its 140,000 amp surge rating as well as 3 stage notification diagnostic, it is still quite a worthy buy.

Check Out The Latest Price Here


Our Review and Rating of Siemens FS140

8.8 Total Score
Siemens FS140 FirstSurge Whole House Surge Protector Review

Unlike its competitors, Siemens FirstSurge has audible alarms to alert you when it is time for replacement. There is also a flashing Red LED to notify you if there is hazardous issue due to compromised electrical system neutral to ground bond. These are in additional to having the usual green LED indicator notifications. Siemens FS140 also comes packed with 140,000amp worth of surge rating which means it is able to block more nasty surges originated from within your home. While the price point is a budget constraint for most homeowners, we truly believe this feature-packed surge protector is more than worth the price it is asking for.

  • 3 Stage Commercial Grade Notifications
  • Surge Current Capacity of 140,000 Amp
  • Modular Surge Protection System
  • Nema Type 4 Enclosure
  • Less than 1 Nanosecond Response Time
  • UL 1449 Listed
  • 10 year product and connected equipment warranty
  • Big size and footprint
  • More costly than most SPDs
  • Additional purchase required for coaxial and phone system protection

Existing Buyers Review

A few buyers mentioned about the surge protection device being too big for their breaker box. But did also mentioned that size does not matter if the installation is done outside the box via conduit. Beyond that, there is not any substantial with the device in terms of quality and surge protection capability.

Check out Why This Surge Protector from Siemens Enjoys Such Excellent Reviews in Amazon


Minor Flaws – What to Expect

Like what I stated earlier, beside the size of this Type 2 SPD being a little too big for fitting into main service panel, there really is not any issue with the product quality.

Important Product information and Specifications

Part Number: FS140

Item Weight: 2.7 pounds

Product Dimensions: 10 x 6 x 4 inches

Item model number: FS140

Color: 4

Surge Current Capacity: 140,000 Amps

Item Package Quantity: 1

Certification: certified frustration-free

Batteries Required?: No

What Else to Know About Siemens FS140?

Some buyers asked what happens next after the audible alarm goes off? Is there any way to silent it? Once the audible alarm gets activated, the device has done its job and will need replacement. Hence turning it and unplugging it from the breaker panel would silent it.

If you want a true 100% whole house protection against surges, be ready to get additional connector and device for both Siemens FSCATV coaxial system and Siemens FSPHONE phone system protection.

Check Out The Latest Price Here

Bottom Line – Should You Get It?

You should get this whole house surge suppressor from Siemens if the size and cost are not an issue for you. Overall, I personally feel that the price is well worth the surge protection features and performance that it comes with.

Marc Edwards is the co-founder of GagtheSurge and is actively involved in writing review and information articles for the site. He loves traveling and has been to most of the countries across the four major continents. Besides working and traveling, he also enjoys jungle explorations and deep sea diving.

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