Shaded pole motors are a type of single-phase electric motor that operates on a simple design principle. This motor is widely used in low-power applications where efficiency is not the primary concern, such as small appliances, fans, and other devices.

The shaded pole motor operates based on a rotating magnetic field created by the stator windings. The motor has a unique feature—a shaded pole. This is a copper band placed around a portion of each pole of the stator. The shading coil causes a slight delay in the magnetic field, creating an unequal magnetic field that causes the rotor to rotate.

While the design is simple, this motor’s ability to start and run on a single-phase supply makes it convenient for a range of low-power applications. However, due to the design, shaded pole motors have a relatively low starting torque and lower efficiency compared to other types of motors.

Shaded pole motors are commonly found in:

Household appliances: small fans, refrigerators, and air conditioners

HVAC systems: for ventilation and cooling systems

Office equipment: such as photocopiers and printers

These applications often demand motors that are easy to manufacture, affordable, and do not require high efficiency or power.