Phase Converter AR10 - 10 HP Pro Series. Condition: New. Best for: 5 HP General Purpose, motor loads, combination loads, light to moderate loads. For a 10HP load, see our AR20 Single motor start: 5HP | CNC: 5HP/3.7kW | Resistive: 14 amps. This 10 HP Pro Series Phase Converter manufactured in the USA by American Rotary is built using longstanding, reliable electromechanical controls designed for Phase Converter use, and used continuously by American Rotary for over 12 years. The AR series provides utility grade power can power virtually any 3-phase equipment.