AC Motors by HP

AC Motors
Horsepower (HP) is a measure of the rate at which work is done in reference to the output of an AC motor. HP can also be converted into kilowatts at a rate of 0.745 kW per 1 HP, which is equal to 550 ft-lb/s (foot-pounds per second).

Shop 0.25HP Motors
Shop 0.5HP Motors
Shop 0.75HP Motors
Shop 1HP Motors
Shop 1.5HP Motors
Shop 2 and 2.5HP Motors
Shop 3HP Motors
Shop 5 and 5.5HP Motors
Shop 7.5HP Motors
Shop 10HP Motors
Shop 15HP Motors
Shop 20HP Motors
Shop 25HP Motors
Shop 30HP Motors
Shop 40HP Motors
Shop 50HP Motors
Shop 60HP Motors
Shop 75HP Motors
Shop 100HP Motors
Shop 125HP Motors
Shop 150HP Motors
Shop 175HP Motors
Shop 200HP Motors
Shop 220HP Motors
Shop 250HP Motors
Shop 270HP Motors
Shop 300HP Motors
Shop 340HP Motors
Shop 350HP Motors
Shop 400HP Motors
Shop 450HP Motors
Shop 500HP Motors
Shop 600HP Motors
Shop 650HP Motors
Shop 700HP Motors
Shop 750HP Motors
Shop 800HP Motors
Shop Other HP Motors


We offer AC Motors in a wide range of horsepower options. In addition to knowing the horsepower you need, there are additional factors to understand when looking at AC motors.

Range of Options
- 0.12 to 800HP

What is horsepower?

Horsepower is a measure of the work done by an AC motor. 1 HP can be visualized by the image of a horse, or a 1 HP motor, lifting a 550 lbs by 1 foot over 1 second. More weight means a slower lift.

HP on the Nameplate

Horsepower and RPM

The horsepower listed on the motor’s nameplate is achieved at the Nameplate RPM. Horsepower and RPM share a linear relationship. For example, an 1800 RPM motor operating at half speed will produce half the horsepower.

Torque is the driving rotational force of an AC motor. Torque is what produces horsepower, or the motor’s ability to do work at a given rate. HP is understood as a product of the motor’s torque and RPM.

HP vs kW

The work performed by an AC motor is measured in two different ways: Horsepower (HP) and Kilowatts (kW). Both are units of power and are preferred in different parts of the world. 1Hp equals 0.746 kW (while 1 kW equals 1.34 HP).

Other Considerations
Your chosen motor’s voltage should match the supply voltage available to you. Motors typically have more than one possible voltage depending on how they are wired.
Revolutions Per Minute (RPM)
RPM represents the speed of the motor. The rated RPM is specific to the frequency stated on the motor’s nameplate, and a different frequency will produce different results.
The size of the actual frame of a given frame size may vary slightly between manufacturers, but a frame size notation is a universal reference to shaft diameter, shaft length, and mounting footprint. Given motors from two different manufacturers with the same state frame size, those three dimensions will remain consistent.