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Ronk 4HE-AA Add-A-Phase (10-50 hp, 480V)

  • NEMA 3R Enclosure: 1-30 hp
  • Inside NEMA 3R Enclosure
  • Padmount: 40-50 hp
Please Call for a Price Quote
210.00 LBS

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Ronk 4HE-AA Add-A-Phase converts 1Ph 480V to 3Ph 480V for 10-50 hp hydraulic passenger elevators. Please call for low discounted pricing and expert sales/application assistance.

Required Information for a Phase Converter Quote



  • Type HE-AA is designed for use with hydraulic passenger elevators.
  • Doesn't require any special starting circuits to "come up to speed."
  • Runs quietly for unobtrusive indoor use.
  • Efficiently runs equipment where loads vary more than 50%.
  • 4HE-AA Models convert single phase 480V to three phase 480V.
  • Rugged, high efficiency power converter that produces balanced three-phase power to operate three-phase motors from single-phase power sources.
  • Operates a motor to its full load rating, plus normal overload.
  • Limits in-rush current when the motor is starting.
  • Can be adjusted to provide balanced currents to motors operating at a constant horsepower load enhancing maximum motor life.
  • High operating efficiency of approximately 97%, adding up to a substantial saving in electricity costs compared to other phase converters on the market.
  • Housed in a NEMA 3R outdoor enclosure through 30 hp.  Models over 30 hp are padmount.  See Spec Sheet below for more on configurations and dimensions.
  • UL Listed.

Add-A-Phase Spec Sheet

HP/Model Comparison Chart
Motor HP / Model Single Phase
Full Load Amps
10 hp 4HE-AA 20A 210 lbs.
15 hp 4HE-AA 30A 250 lbs.
20 hp 4HE-AA 40A 330 lbs.
25 hp 4HE-AA 48A 370 lbs.
30 hp 4HE-AA 58A 425 lbs.
40 hp 4HE-AA 75A 585 lbs.
50 hp 4HE-AA 93A 671 lbs.
Add-A-Phase Type HE-AA
Single Phase 480V
Three Phase 480V
10, 15, 20, 25, 30, 40, 50
Single Phase Full Load Amps:
See Chart under Description Tab
Dimensions HxWxD (inches):
Varies - See Spec Sheet
See Chart under Description Tab
Limited Warranty:
5 Years

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