Phase Converter ADX20-20 HP Digital Smart Series Extreme Duty - American Made Condition: New. Best for: 10 HP high inertia/friction loads such as Pumps, Fans, Compressors, Blowers, Dust Collectors, Fly-wheels. For a 20HP load, see our ADX40 Single motor start: 10HP | CNC: 10HP/7.5kW | Resistive: 28 amps. Country of Manufacture: United States Manufacturer:American Rotary Made: Made in USA