Variable Frequency Drives & Digital Phase Converters


Variable Frequency Drive
For 2 & 3 Wire Motors
1/3 HP to 2 HP
120V and 240V
Single Phase


Designed specifically for pumping applications. Residential & light industrial. 120/240v VFD for a single motor load.

Get installation and setup video HERE

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Phase Technologies has designed a simple solution for residential constant pressure installations (1/3-2HP). The ES product line offers simple setup, rugged hardware, 3R cabinets, and a digital pressure sensor with every package.

Return trips are expensive and can many times lead to a poor customer image of the installation. Phase Technologies has produced a product line specifically to solve this problem, the ES series. With pricing that even the most budget-minded customer will appreciate and a 2-year warranty, the ES series is the best choice for small constant pressure applications.

Demand-driven constant pressure for residential wells is now inexpensive, reliable, and a luxury available to all homeowners thanks to Perfect Pressure, standard with all ES systems. Perfect Pressure only requires a few minutes of setup time and is capable of controlling the most complicated plumbing systems with ease. With constant pressure, plumbing systems run smoothly with fewer instances of short cycling.

Target Market

Residential & Light Industrial

Wells Pumps, Irrigation Pumps

Standard Features
  • Large Easy-To-Read Graphic Display
  • NEMA 3R Enclosure w/ Insect Guards
  • Easy Perfect Pressure™ - Setup Constant Pressure In Minutes
  • 2-Year Warranty
  • 122° F (50° C) Rated
  • Easy Field Serviceability
  • Includes 150 psi 4 - 20mA transducer


Optional Add-Ons
  • Digital Pressure Switch
  • Overpressure switch


Models: ES3R-A
General Power Specs  
Rated HP 1/3 to 2HP
Rated Input Current 13 - 24A
Input Voltage 190-265V or 96-132V
Rated Output Current 13.1 - 24A
Output Voltage 240V or 120V single-phase
Other Specs  
Recommended Breaker Size See Specification Sheet
Min Wire Size See Specification Sheet
Enclosure size (H x W x D) 13 x 9.25 x 4.5"
Shipping Weight 7 lbs
Shipping Type Ground

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