Alpha Technologies Inc.
Phone: 360 647 2360
Email: alpha@alpha.com
AlphaTVSS™
AlphaTVSS™
  • Safe operation – no explosions, no smoke, no fumes and no flames
  • Isolates the load from damaging transients and all other abnormal line conditions
  • Lifetime of 20+ years
  • NEMA 4-IP65 rated enclosure
  • UL recognized surge suppression Type 2 UL 1449 3rd Ed. 2011


The AlphaTVSS uses an innovative design based on years of market research to safely conduct to ground all power surges. Its rigid metal construction and its ability to handle particularly high energy levels, in conjunction with the use of single, high-capacity industrial heavy-duty Metal Oxide Varistors offer excellent performance against transient lightning currents of up to 200,000 A. The explosion and fire risks common to most conventional protection systems are eliminated. The AlphaTVSS’s unique design ensures more than 20 years of trouble and maintence free operation.

The Strikesorb® surge suppression module’s unique design provides low internal contact resistance, excellent thermal management of the MOV, and uniform distribution of the surge current over the total area of the protection element, resulting in an extremely high energy handling capability and very low let-through voltages. Strikesorb’s patented design minimizes the effects of aging and completely eliminates the risk of catastrophic failure, explosion, or fire.
ATVSS
General Specifications
Models:ATVSS-2-120ATVSS-3-120/240ATVSS-4-120/208ATVSS-2-240ATVSS-4-220/380
Electrical Characteristics
Nominal Operation Voltage120V120V/240V120V/208V240V240V
Maximum Continuous Operating Voltage150V150V150V300V300V
Vref (Peak) @ 5mA AC (Peak)263V263V263V526V526V
Operating Frequency Range25 to 500Hz25 to 500Hz25 to 500Hz25 to 500Hz25 to 500Hz
Leakage Current at Vn0.30mA0.30mA0.30mA0.35mA0.35mA
Surge Protection Levels
Surge Voltage Rating500V500V500V800V800V
Response Time<1ns<1ns<1ns<1ns<1ns
Maximum Surge Current140kA140kA140kA140kA140kA
Maximum Lightning Current7.5kA7.5kA7.5kA7.5kA7.5kA
Let-through Voltage
For Surge Current 10kA (8/20)435V435V435V895V895V
EnclosureIP65-NEMA4IP65-NEMA4IP65-NEMA4IP65-NEMA4IP65-NEMA4
Dimensions W x H x D (in)6 x 8 x 610 x 12 x 610 x 12 x 66 x 8 x 610 x 12 x 6
Operating Temperature-40 to 85°C / -40 to 185°F-40 to 85°C / -40 to 185°F-40 to 85°C / -40 to 185°F-40 to 85°C / -40 to 185°F-40 to 85°C / -40 to 185°F
Document Downloads
Title Type Version Date
Alpha TVSS Datasheet 03/2012 March 15, 2012