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HDH Roto-Phase

Rotary Roto Phase Converter Hoist

The ARCO "HDH" Series Roto-Phase is designed for hoist and trolley applications. The "HDH" Roto-Phase converters have been engineered to operate hoist and trolley motors at 100% of their nameplate rated horsepower. Just like all the ARCO Roto-Phase converters, this series of converter models offers superior workmanship that meets or exceeds the industry's highest standards. The units are compact, easy to install, and virtually maintenance free. In order to size the correct model, simply match the horsepower of the hoist motor to the horsepower rating of the converter model.

Model Largest Motor
HDH-1 1 HP
HDH-2 2 HP
HDH-3 5 HP
HDH-5 7½ HP
HDH-7 10 HP
HDH-10 15 HP

The HDH Roto-Phase is designed for Hoist and Trolley applications. Engineered to operate at 100% of the nameplate horsepower, they also allow load testing of up to 150% of their rated horsepower. If you have any questions concerning sizing, then consult the factory at 1-800-428-4370 or 317-398-9713.

Model Notes:

  • Heavy Duty Construction
  • Continuous Duty Cycle
  • Easy Installation
  • Available Voltages: 208, 230, or 460
Rotary Roto Phase Converter Diagram

Roto-Phase Accessories from ARCO

  • Starters
  • Fuses
  • Disconnects
  • Motor-Servers
  • Items sold sperately or as a package with Standard-Duty Roto-Phase Models.
SPECIFICATIONS: Approx.
Ship Wt.
FRAME A B C E F G H L M O P CC DD OO TT
HDH1 8.50 6.50 12.00 3.75 2.75 1.87 .437 6.0 6.0 8.25 7.75 3.875 6.25 12.00 X 84
HDH2 9.50 8.00 13.75 4.25 3.50 1.87 .406 6.875 6.875 10.06 9.56 4.78 8.00 15.56 2.375 150
HDH3 11.24 10.07 16.25 5.00 4.12 .60 .562 9.40 6.56 12.53 12.56 6.28 8.00 20.56 3.00 200
HDH5 11.24 11.57 17.50 5.00 5.00 .60 .562 10.15 7.31 12.53 12.56 6.28 8.00 20.56 3.00 250
HDH7 12.58 12.94 32.50 6.50 5.50 .25 .531 9.84 9.84 14.64 13.75 6.875 8.00 21.75 1.93 380
HDH10 14.56 13.44 32.50 6.25 6.00 .34 .656 10.28 10.28 16.64 15.75 7.28 8.00 23.75 1.93 500
HDH15 16.19 14.12 32.50 7.00 5.62 1.12 .660 11.16 11.16 18.44 17.31 8.095 8.00 25.31 3.14 810

Dimensions given are not certified.
Case size and shipping weights are subject to change without notice.
ARCO Electric reserves the right to make product changes without prior notice.

How to Specify:

For Manual Models: "3-Phase motors shall be powered from a single phase source by a multimotor rotary phase converter (single to three phase) equal to ARCO Roto-Phase Model: _____, Voltage: _____, as manufactured by ARCO Electric Products Shelbyville, Indiana with a 5-year warranty or approved equal."

Contact ARCO

Home Office:
2325 E. Michigan Road
Shelbyville, IN 46176-3400
Toll Free: 800-428-4370
Direct: 317-398-9713
Fax: 317-398-2655
Location Manager:
E-Mail: Hal Pike
Sales Manager:
E-Mail: Tim Drake