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.


Allen Hase, Hobbyist / .
— Metalworking

The American Rotary Phase Convertor was recommended by a friend. After I purchased it unit online, I received a call from American Rotary checking that I had order the correct size for my equipment. Thanks!

The installation was simple and straight forward. The idler motor sets on the floor on the other side on the shop under my lathe. The mill runs smoothly with no noticeable power loss.  

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