Fractional Horsepower Motor
A fractional-horsepower motor (FHP) is an electric motor with a rated output power of 746.9 or 746 Watts or less. There is no defined minimum
output, however, it is generally accepted that a motor with a frame size of less than 35mm square can be referred to as a 'micro-motor'.
The term 'fractional' indicates that the motor often has a power rating smaller than one horsepower.
Fractional-horsepower electric motors are exempt from the US Energy Policy Act of 2005 and the new EN 60034-30:2009 ruling of European directive 2005/32/EC concerning the efficiency classes of low-voltage three-phase asynchronous motors.