If you don't do it every day, converting single phase power to three phase power can be a confusing topic. Fortunately, the staff at American Rotary does this every day, and we are more than happy to ensure you choose the phase converter solution that is right for your application. The support links to your right can help answer many of the most frequently asked questions  about our industry leading phase converters.

Industry's Leading Technical SupportAmerican Rotary is the only phase converter company that can recommend and supply the ideal CNC phase converter to meet the requirements of your application. Our highly trained technical staff is available toll free to assist you in determining the correct CNC phase converter for your voltage sensitive application. Please call toll free 1-888-743-6832 for assistance.

Sizing chart

The following sizing method has been used by American Rotary Engineers to sucessfully size tens of thousands of phase converters. For additional sizing assistance call 1-888-928-3339.

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What are the Voltages on the output of the phase converter with your load running?
Idler Connections should be done as follows:
240v incoming power: A(1-7) B(2-8) C(3-9) 4,5,6 are bolted to each other and not connected to any other wires
480v incoming power: A-1, B-2, C-3, (4-7), (5&8), (6&9).
Your Request will be reviewed and one of our technicians will contact you with-in 24 hours or by the next business day.
Phase Converter Simple Installation

In this video, we show the basic installation techniques of the American Rotary Phase Converter Panel.


Tracy Phillips Phillips, . / Electrical Services LLC
— Industrial

We just installed the unit on 5-1-14. The rotary phase converter works great, very quiet, very straight forward hook up. We are powering a crane with (3) different motors.


I installed another manufacturers rotary phase converter on a different project a week before ( the customer purchased his own, thought he was getting a bargain) It took me about an hour more to hook up his than it did yours, the noise level when running is louder, finished product not as clean looking. This was for an irrigation pivot.


The rotary phase converter I purchased from you was easy to wire, noise level when running is minimal, the overall finished project looks very good. I will definitely purchase from you in the future.

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