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POWRSOFT®

POWRSOFT® Controller is designed 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.

Built to work exclusively with Ronk rotary phase converters. These units can be retrofitted into an existing Ronk converter installation.

Features:

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

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

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  • Amp Rating
    Model

    Single-Phase Input

    ROTO-CON® Type P*

    ROTO-CON® Type D-1*

    ROTOVERTER Type C

    ROTOVERTER Type D

    PWRS-2R-30

    240 V

    ≤30 KVA

    ≤12 KVA

    ≤30 KVA

    ≤12 KVA

    PWRS-2R-100

    240V

    40 KVA - 100 KVA

    14 KVA - 35 KVA

    40 KVA - 100 KVA

    14 KVA - 35 KVA

    PWRS-2R-150

    240V

    120 KVA - 150 KVA

    42 KVA - 52.5 KVA

    120 KVA - 150 KVA

    42 KVA - 52.5 KVA

    PWRS-4R-60

    480V

    ≤60 KVA

    ≤21 KVA

    ≤60 KVA

    ≤21 KVA

    PWRS-4R-150

    480V

    80 KVA - 150 KVA

    28 KVA - 52.5 KVA

    80 KVA - 150 KVA

    28 KVA - 52.5 KVA

    * Works with all rotary phase converters except ROTO-CON® Type CP
  • Shipping Weights
    Model

    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.

  • Inrush Reduction with ROTO-CON®
    Approx. Inrush @ 240 V

    POWRSOFT® 50% Reduction

    30 A

    15 A

    40 A

    20 A

    75 A

    37.5 A

    110 A

    55 A

    150 A

    75 A

    240 A

    120 A

    330 A

    165 A

    360 A

    180 A

    420 A

    210 A

    500 A

    250 A

  • POWRSOFT with ROTOVERTER®
    ROTOVERTER® TYPE C

    ROTOVERTER® TYPE D

    Approx. Inrush @ 240 V

    POWRFSOFT® 50% reduction

    4 KVA - 6 KVA

    1.4 KVA - 2.1 KVA

    30 A

    15 A

    10 KVA

    3.5 KVA

    75 A

    37.5 A

    15 KVA

    5.3 KVA

    110 A

    55 A

    20 KVA

    8 KVA

    200 A

    100 A

    30 KVA

    12 KVA

    240 A

    120 A

    40 KVA

    16 KVA

    280 A

    140 A

    50 KVA - 60 KVA

    21 KVA

    330 A

    165 A

    80 KVA

    28 KVA

    420 A

    210 A

    100 KVA

    35 KVA

    500 A

    250 A

    120 KVA

    42 KVA

    575 A

    287.5 A

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