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NEW: SVL Series

STFV Plus Series

The Sola STFV Plus Series combines Active Tracking® filtration for low energy noise and surge suppression for high energy transients. It continuously tracks the input AC power line responding instantly into action upon detecting extraneous high frequency noise and high voltage transients caused by everyday events such as turning on machinery, motors, or equipment.

These devices are designed to meet UL 1283. STFV Plus attenuates or reduces the amplitude of high frequency noise to a maximum of 90dB that occurs in a range of 100 KHz to 50 MHz. STFV Plus provides the industry’s best IEEE C62.41 Category “A & B” Ringwave protection.

They are built to meet your unique requirements, and are available in hardwire, single phase configuration. They are designed for years of trouble free operation and require little or no operator intervention after installation.

Active Tracking® Filters Plus is one part of a total power quality solution. They can be used alone or in conjunction with other Sola/Hevi-Duty products to solve more complex power quality problems.


  • Non degrading, series filter/tvss technology for total durability
  • Surge current capacity – 25,000 Amps
  • High impact plastic case, epoxy encapsulated enclosure
  • Transient protection in all modes (L-N, L-G, and N-G)
  • Single Phase applications up to 30 Amp
  • Operating Temperature from -40°C to +60°C
  • Hardwired connection
  • LED power indication
  • UL 1283 for Electromagnetic Interference Filters
  • 10 Year Warranty

PDF Files

STFV Plus Series Specifications
STFV Plus Series Flyer
STFV Plus Series Manual


STFV Plus Series

Catalog Number Amps AWG Suggested Screw Size Fuse/Circuit Breaker Ampacity
Suggest Max

Single-Phase Models (120 VAC)


2.5 26 #6 2.5 3.125
STFV050-10N 5.0 22 #6 5 6.25
STFV075-10N 7.5 18 #6 7.5 6.25
STFV150-10N 15.0 14 #6 15 18.75
STFV300-10N 30.0 10 #6 30 37.5
Single-Phase Models (240 VAC)
STFV025-24L 2.5 26 #6 2.5 3.125
STFV050-24L 5.0 22 #6 5 6.25
STFV075-24L 7.5 18 #6 7.5 6.25
STFV150-24L 15.0 14 #6 15 18.75
STFV300-24L 30.0 10 #6 30 37.5

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