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Ronk 2SUB Add-A-Phase (1-60 hp, 240V)

  • NEMA 3R Enclosure: 1-25 hp
  • Inside NEMA 3R Enclosure
  • Padmount: 30-60 hp
Please Call for a Price Quote
60.00 LBS

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Ronk 2SUB Add-A-Phase converts 1Ph 240V to 3Ph 240V for 1-60 hp single motor submersible pumps. Please call for low discounted pricing and expert sales/application assistance.

Required Information for a Phase Converter Quote



  • Type SUB is specifically designed for use with deep well submersible pump motors and submersible waste water pump motors.
  • Designed and built to handle the extra load requirements of a submersible pump motor.
  • 2SUB Models convert single phase 240V to three phase 240V.
  • 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 25 hp.  Models over 25 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
1 hp 2SUB 7A 60 lbs.
1.5 hp 2SUB 9A 63 lbs.
2 hp 2SUB 13A 74 lbs.
3 hp 2SUB 20A 140 lbs.
5 hp 2SUB 30A 165 lbs.
7.5 hp 2SUB 40A 205 lbs.
10 hp 2SUB 60A 242 lbs.
15 hp 2SUB 80A 310 lbs.
20 hp 2SUB 95A 350 lbs.
25 hp 2SUB 115A 390 lbs.
30 hp 2SUB 150A 555 lbs.
40 hp 2SUB 185A 626 lbs.
50 hp 2SUB 220A 680 lbs.
60 hp 2SUB 280A 700 lbs.
Add-A-Phase Type SUB
Single Phase 240V
Three Phase 240V
1, 1.5, 2, 3, 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60
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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