Single Phase Motors

A reliable source for Electric Motor information and leading Electric Motor Companies & Manufacturers.

One industry that utilizes single phase motors is construction, which uses them to power essential building equipment such as electric power tools and portable lighting. Read Moreā€¦

Single Phase Motors Single phase motors are a type of electric motor that operates on single phase electrical power, which is a power source in which all of the voltages of the power supply work in unison as a single unit, functioning to distribute alternating current (AC) power.

Leading Manufacturers

Mankato, MN  |  612-746-7624

At Electric Motor solutions, our goal is to provide the best motors and equipment to meet the needs of your application. Products include linear actuators, electric motors, speed reducers, custom motors, vacuum cleaner motors, AC motors, and more.

Request A Quote

Electric Motor Solutions $$$

Stratham, NH  |  844-858-5030

We manufacture motors, motion control and rotating products for OEMs. The electric motors obtainable through us include AC motors, AC/DC motors, brushless DC motors, stepper motors.

Request A Quote

ElectroCraft, Inc. $$$

Crystal Lake, IL  |  815-459-3080

Autotrol's motors are recognized for reliability, engineering and service. Our line of products includes electric motors, AC motors, DC motors, gear motors, permanent magnet motors, stepper motors, synchronous motors, and custom motors. We are ISO 9001:2015 certified. We pride ourselves on our flexibility and customer service, and it is our goal to surpass your expectations.

Request A Quote

Autotrol Corporation $$$

Elma, NY  |  800-336-2112

In addition to fractional horsepower motors we also provide a number of other various motor products that will assist you in keeping your business running smoothly. We have been in business for over fifty years and we wish to put all of those years of experience to work for you! Allow us to show you the difference when you work with true experienced professionals! For more information visit our website today!

Request A Quote

Moog Inc. $$$

Franksville, WI  |  262-886-9069

Mamco Corp. is a manufacturer of electric motors, AC motors, DC motors, gear motors and permanent magnet motors. Provides quality, design assistance and on-time delivery. We specialize in variable speed and electric motors. If you have specific requirements, our innovative team can design and manufacture customized motors for your applications.

Request A Quote

Mamco Corporation $$$
placeholder image Electric Motor Solutions ElectroCraft, Inc. Autotrol Corporation Moog Inc. Mamco Corporation

Single phase electrical power works much like a three phase electric power, in which the voltages of the power supply can alternate between three different circuit conductors, except with the single it is on power supply providing the voltage. Therefore 3 phase motors are able to self-start and produce a rotating magnetic field by itself, whereas single phase motors require the use of an additional power supply in order to start and produce the magnetic field.

Single Phase General Purpose Motor Single Phase General Purpose Motor - Electric Motor Solutions

Three phase motors are more commonly found in industrial manufacturing applications; however, single phase motors are also utilized in a wide range of applications and industries including: residential, for use in household appliances such as dishwashers, washing machines, blenders, dryers and more; commercial, for use in equipment and parts such as fans, swimming pool pumps and air conditioners; industrial, in small workshops used to power smaller-horsepower (HP), lighter-duty machine tools such as gear motors; and aerospace, for use in smaller power, motion control applications.

Since single phase motors are incapable of producing a rotating magnetic field on their own, they require an external power supply in order to produce power and effectively convert electrical energy into mechanical energy. A common external power supply used to start single phase motors is an assembly of a combination of either a capacitor and an auxiliary winding, which is also known as a start switch and actually is a seconding winding in the motor itself.

Another combination could be that of a capacitor, an auxiliary stating winding and a centrifugal switch. Through the external power supply, an AC current is applied to the single phase motor. When the AC current is applied, both the start winding and the run winding function to produce magnetic fields. Of the two windings, the start winding has a much stronger current and as a result, a stronger magnetic field is created which causes the motor to begin rotation.

It is only when the motor reaches the point of about 80% of its rated speed that the centrifugal switch is activated and disconnects the start winding from the motor. Once the start winding is disconnected, the motor is able to main a strong enough rotating magnetic field that it is able to operate on its own without the external power supply.

Single Phase Motors Informational Video