SD VFD Chassis front view
SW Series

Sine Wave Output Filters

9 - 480 A | 480 V | Open, NEMA 1, and NEMA 3R

  • Extends the life of a motor, bearings, and cable
  • Superior sinusoidal waveform
  • Distributed gap alloy powder core
  • Recommended lead length 650 - 15,000'
  • Manufactured, assembled, and tested in the U.S.

Uncommon Value in Motor Protection

Phase Technologies is pleased to offer the SW Series sine wave filter for extra long lead motor applications.

Phase Technologies SW Series output filters are designed with distributed gap alloy powder cores resulting in superior peak voltage reduction, lower core losses, higher temperature stability, and a more compact product envelope.

The SW Series output filters are completely manufactured in the U.S. using our vertically integrated manufacturing processes include: coil winding, varnishing, sheet metal enclosure fabrication, fully automated wire processing center, advanced printed circuit board assembly line, and UL508A custom panel shop.

All stand alone output filters are tested and certified to the UL508 standard.

dv SERIES NEMA 3R dV/dt filter

Standard PWM waveform
sine wave PWM waveform


SW Series

Contact our sales department for terms and pricing on SW Series motor protection filters.

Contact sales