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Featured Product:  ZeroSurge FF1-20W-240UB (Euro Connectors)

ZeroSurge FF1-20W-240UB (Euro Connectors)

Part # 002-03073

Branch Circuit Protection, NEMA1 Enclosure, 240/208VAC

NEMA1 Screw cover box with knockouts 12"H x 12"W x 4"D

Click here for PDF spec sheet 

ZeroSurge FF1-20W-240UB (Euro Connectors)

Part # 002-03073

This unit does not have outlets and requires installation by a licensed electrician.



Education section



UL1449 vs UL1283  UL rating

UL 1449 is the safety standard for “TVSS”, Transient Voltage Surge Suppressors. The appropriate safety listing for a surge suppressor that uses MOVs as clamping components is UL 1449. These types of Plug-In devices clamp and divert surges, and wear out with use.

UL 1283 is the safety standard for “Electromagnetic Interference Filters”. Zero Surge technology is filter technology. Since surges consist of a brief burst of high frequency energy, surges can be eliminated using appropriate filtering technology. This technology does not wear out with use.

A-1-1 Certification
All Zero Surge products meet the A-1-1 Classification. Surge suppression has been classified by the US Government using the following terminology:


  • Grade A is the best endurance: 1,000 surges of 6,000 volts, 3,000 amps with no degradation.
  • Class 1 specifies the best voltage suppression of 330 volts peak for 6,000 volt, 3,000 amp surges.
  • Mode 1 is Line to Neutral suppression. This avoids ground wire contamination and is recommended for interconnected equipment.

MOV Suppressor Safety

Important Alert:  CPSC Recalls 15 million surge protectors.  Click here for information.

If you are using an MOV type surge suppressor or are considering their use, please read the following:

  • MOVs wear out and must be replaced every 6 months to 3 years depending on the surge environment. The “protection working light” is proof the manufacturer expects their product to fail, making their use a real gamble!
  • Failed MOVs may flame, smoke, or open a fuse, removing power from critical equipment.
  • Most MOV suppressor ratings are based on calculations, not actual endurance testing.
  • MOVs used in “all three modes” actually endanger networked equipment, and can degrade audio, video and computer signals.


  • Avoid using suppressors in plastic housings. Metal housings will impede MOV fires better.
  • Do not place MOV suppressors on carpeting, near curtains or other flammable surfaces.
  • Shake the suppressor periodically and listen for loose parts. Discard if it rattles.
  • If the housing has burn marks (soot, discoloration), discard immediately.
Check with Underwriters Laboratories to see if a manufacturer has had its products tested for endurance and performance (Adjunct Classification) as well as safety or ask the company for the test results from another Nationally Recognized Testing Laboratory (NRTL). If a product is not rated for performance and endurance, its use is simply a dangerous gamble.

Additional safety information:

Laboratory/Clean Room Applications

LAB_(2033)Laboratories, clean rooms, and R&D facilities are critical environments with extremely sensitive electronics.  The surge and noise protection in these environments must be superior to insure that the expensive, critical equipment is not adversely affected by power surges.  Zero Surge’s series mode technology protects connected equipment from even worst case surges.  It was certified for performance and endurance by Underwriters Laboratories to withstand 1,000 worst case surges of 6,000 Volts/3,000 Amps in 30 second intervals without degradation or failure!

Workstations, DNA testing equipment, incubators, and hoods are just some of the types of equipment being protected by Zero Surge’s power quality filters.  Solutions are available in 15 and 20 Amps to accommodate various applications.

Lab Manager Mag


Read more about effective electrical surge protection for sensitive laboratory electronics in the June 2014 issue of Lab Manager Magazine by clicking on the magazine cover or here.







For 120V units click here

Shipping Warranties


Shipping to US 48 states will show up in the Shopping cart before you have to type in your name and address information.

Need it faster than 3-5 day ground?
Call or email for a quote if time is of the essence or you want expedited shipping. Note that most units are usually in stock but sometimes must be built to order and that usually adds only 2 or 3 business days.

Shipping to Canada  $65 for average orders
Will confirm price with you by email before processing the charge.

Shipping charges to Hawaii will be at least $75 and possibly much more. We had to discontinue ground shipments to Hawaii because the trucks kept sinking.  Email for a shipping quote to Hawaii.

For a shipping quote to other locations, send an email with your proposed order and postal code to:

Covered by manufacturer's full Ten Year US warranty.

This is a high tech item and all sales are final.  IF you are not sure what this is or whether you really want it then you probably don't.

This must be installed by a licensed electrician.

Just call


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Be sure to also look at our Minuteman True online backup power systems.   At SELLCOM we use Minuteman for our True Online backup power.


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    Manufacturer's Warranty

ZeroSurge Products have a 10 year parts & labor warranty


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Surge suppression and line filtering for critical non-fail protection and clean power. Whether you are looking for power surge protection, a surge protection device, transient voltage surge suppressor, transient voltage surge protection, power line conditioner, power and surge protection, voltage surge suppression, surge suppression products, transient voltage surge suppressors, surge suppression, power protection from surge, transient voltage suppressors, transient voltage suppressor, transient voltage suppression, spike protection, power line conditioners, the best power strip surge protection, transient voltage surge protector, transient voltage surge suppression, backup brownout power protection, transient voltage suppressor, power supply line conditioners, transient voltage protector, surge suppressors line conditioners, power protection line conditioner, or power strips surge protector the Zerosurge (for 240V) or Brickwall (for 120V) is your best option.