Home Products Resources Applications About Us Contact Us Partner Login

POWRSOFT® Rotary Soft-start Controller

POWRSOFT

Features

  • Nema 3R-outdoor-corrosion resistant aluminum construction
  • Heavy-duty components incorporating short circuit and overload protection ensures years of trouble-free operation
  • Available in 2 KVA to 150 KVA ratings for both 240 V and 480 V installations

Description

The Ronk POWRSOFT Controller is engineered to soft start Ronk rotary phase converters. By reducing the normal starting inrush on the single phase line by up to 50%, larger rotary converters may be used on utility single phase lines for irrigation systems and other loads when three phase is not available.

POWRSOFT is designed to work only with Ronk rotary phase converters. These new units can also be retrofitted into an existing Ronk converter installation.

Tech Spec | User Manual

Series

  • PWRS-2R-30: Single-phase 240 V input, for ROTO-CON® or ROTOVERTER® enclosures up to 256
  • PWRS-2R-100: Single-phase 240 V input, ROTO-CON or ROTOVERTER enclosures 284 to 326
  • PWRS-2R-150: Single-phase 240 V input, ROTO-CON or ROTOVERTER enclosures 364 to 365
  • PWRS-4R-60: Single-phase 480 V input, ROTO-CON or ROTOVERTER enclosures up to 286
  • PWRS-4R-150: Single-phase 480 V input, ROTO-CON or ROTOVERTER enclosures 324 to 365
Amp Rating
Dimensions
Shipping Weights
Inrush Reduction
POWRSOFT
Type
1⌀ Input ROTOCON* ROTOVERTER Rotary Converter
Frame Enclosure
Type P Type D-1 Type C Type D
PWRS-2R-30 240 V ≤30 KVA ≤12 KVA ≤30 KVA ≤12 KVA Up to 256
PWRS-2R-100 240 V 40 KVA -
100 KVA
14 KVA -
35 KVA
40 KVA -
100 KVA
14 KVA -
35 KVA
284 to 326
PWRS-2R-150 240 V 120 KVA -
150 KVA
42 KVA -
52.5 KVA
120 KVA -
150 KVA
42 KVA -
52.5 KVA
364 to 365
PWRS-4R-60 480 V ≤60 KVA ≤21 KVA ≤60 KVA ≤21 KVA Up to 286
PWRS-4R-150 480 V 80 KVA -
150 KVA
28 KVA -
52.5 KVA
80 KVA -
150 KVA
28 KVA -
52.5 KVA
324 to 365

* Works with all rotary phase converters except ROTO-CON® Type CP

POWRSOFT Enclosure (in inches)

Dimensions

Approximate Shipping Weights

POWRSOFT
Type
Weight
PWRS-2R-30 30 lbs.
PWRS-2R-100 33 lbs.
PWRS-2R-150 38 lbs.
PWRS-4R-60 34 lbs.
PWRS-4R-150 38 lbs.

POWRSOFT with ROTO-CON

Base/
Frame
Approx.
Inrush @240 V
POWRSOFT
50% Reduction
182 30 A 15 A
184 40 A 20 A
213 75 A 37.5 A
215 110 A 55 A
254 150 A 75 A
256 240 A 120 A
286 330 A 165 A
324 360 A 180 A
326 420 A 210 A
364 500 A 250 A

POWRSOFT with ROTOVERTER

Base/
Frame
Type C
Rating
Type D
Rating
Approx.
Inrush @240 V
POWRSOFT
50% Reduction
184 4 KVA -
6 KVA
1.4 KVA -
2.1 KVA
30 A 15 A
213 10 KVA 3.5 KVA 75 A 37.5 A
215 15 KVA 5.3 KVA 110 A 55 A
254 20 KVA 8 KVA 200 A 100 A
256 30 KVA 12 KVA 240 A 120 A
286 40 KVA 16 KVA 280 A 140 A
286 50 KVA -
60 KVA
21 KVA 330 A 165 A
326 80 KVA 28 KVA 420 A 210 A
326 100 KVA 35 KVA 500 A 250 A
364 120 KVA 42 KVA 575 A 287.5 A