AC Motors

AC motors are driven by an alternating current and are a highly efficient way of turning electrical energy into mechanical motion. AC motors differ from DC (Direct Current) Motors in that they are brushless, meaning less need for maintenance and a typically longer life expectancy. Unlike DC motors, the output speed for AC motors is typically controlled by a frequency drive control.

What are the types of AC motors?

The RS Range of AC motors includes the following:

  • AC induction motors are typically used in kitchen appliances, automobiles and industrial machinery, induction motors have an output rotation speed that is proportional to its applied frequency of the alternate current.
  • AC synchronous motors so-called because the speed of the rotor is proportional to the stator, synchronous AC motors are used where accuracy is an important factor, such as clocks and timers.
  • AC squirrel cage motors are a type of induction motor that uses a cage rotor instead of a wound rotor, and as such is considered to be more rugged and less maintenance heavy. Squirrel cage induction motors are often used in applications where a low starting torque is required and no speed control is needed, such as pumps and air compressors.
  • AC shaded pole motors are a single-phase squirrel cage motor that uses an auxiliary winding composed of either a copper ring or bar, called a shading coil. Unlike standard squirrel cage motors, they are suited for multiple speeds and are often used in fans.
  • AC geared motors integrate a gear reducer with an electric AC motor to deliver high torque at low speed or low horsepower. Operating at low speed allows these motors to exert greater power.
  • AC servo motors feature a rotary actuator that allows for precise control of angular position. The motor is attached by gears to the control wheel, as the motor rotates, the position sensors resistance changes, so the control circuit can precisely regulate movement.
  • AC Stepper Motors are commonly used as an output in electronic circuits, it divides a full rotation into a number of equal steps.

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Description Price Power Rating Efficiency Class Frequency Rating AC Motor Type Supply Voltage Phase Output Speed Number of Poles Gearhead Type Gear Ratio Mounting Type Shaft Diameter Shaft Length Width
RS Stock No. 918-0821
BrandRS PRO
£28.71
Each
Units
9.5 W - 50Hz Synchronous Geared 240 V 1 30 rpm - Spur - - 4mm 10mm 65mm
RS Stock No. 918-0742
BrandRS PRO
£27.10
Each
Units
3.6 W - 50Hz Synchronous Geared 230 V 1 500 rpm 1 Spur 20:1 - 3mm 7mm 78mm
RS Stock No. 918-0802
BrandRS PRO
£32.27
Each
Units
5.8 W - 50Hz Synchronous Geared 240 V 1 1 rpm - Spur - - 6.35mm 13mm 65mm
RS Stock No. 918-0789
BrandRS PRO
£27.10
Each
Units
3.6 W - 50Hz Synchronous Geared 230 V 1 500 rpm 1 Spur 25:1 - 3mm 7mm 78mm
RS Stock No. 918-0764
BrandRS PRO
£23.03
Each
Units
3.6 W - 50Hz Synchronous Geared 230 V 1 500 rpm 1 Spur 250/3:1 - 3mm 7mm 78mm
RS Stock No. 204-4800
Mfr. Part No.82524016
BrandCrouzet
£90.20
Each
Units
3.5 W - - Synchronous Geared 230 → 240 V - 1 rpm - - - - 4mm 10mm 56mm
RS Stock No. 441-0423
Mfr. Part No.9904 111 31813
£69.58
Each
Units
1.8 W - - Synchronous 110 V 1 250 rpm @ 230 V 24 - - Flange Mount 3mm 12.7mm -
RS Stock No. 332-802
Mfr. Part No.9904 111 32311
BrandPhilips
£46.45
Each
Units
1.7 W - - Synchronous 110 → 240 V 2 300 rpm @ 110 V 24 - - - 2mm 7.8mm -
RS Stock No. 424-083
Mfr. Part No.M9MZ90GK4YGA
BrandPanasonic
£227.67
Each
Units
90 W - - Induction 230 V 3 1320 rpm @ 230 V 4 - - - - - 90mm
RS Stock No. 248-3637
Mfr. Part No.AC1004
£18.12
Each
Units
24 W - - Shaded Pole 230 V 1 2000 rpm @ 240 V 2 - - - 6mm - -
RS Stock No. 424-207
Mfr. Part No.M91X40G4GGA
BrandPanasonic
£162.08
Each
Units
40 W - - Induction 230 V 1 1275 rpm @ 230 V 4 - - - - - 90mm
RS Stock No. 424-201
Mfr. Part No.M81X25GK4GGA
BrandPanasonic
£145.39
Each
Units
25 W - - Induction 230 V 1 1250 rpm @ 230 V 4 - - - - - 80mm
RS Stock No. 775-4583
Mfr. Part No.1LE1001-1AB42-2AA4
BrandSiemens
£469.91
Each
Units
2.2 kW IE2 - Induction 230 V, 400 V 3 1455 rpm 4 - - Foot 28mm 60mm 196mm
RS Stock No. 423-973
Mfr. Part No.M8MX25G4YGA
BrandPanasonic
£140.23
Each
Units
25 W - - Induction 230 V 3 1320 rpm @ 230 V 4 - - - - - 80mm
RS Stock No. 424-144
Mfr. Part No.M61X6G4GGA
BrandPanasonic
£104.13
Each
Units
6 W - - Induction 230 V 1 1250 rpm @ 230 V 4 - - - - - 60mm
RS Stock No. 775-4672
Mfr. Part No.1LE1001-1CB03-4FA4
BrandSiemens
£887.88
Each
Units
5.5 kW IE2 - Induction 400 V, 690 V 3 1465 rpm 4 - - Flange Mount 38mm 80mm 256mm
RS Stock No. 775-4638
Mfr. Part No.1LE1001-1CA13-4FA4
BrandSiemens
£994.88
Each
Units
7.5 kW IE2 - Induction 400 V, 690 V 3 2950 rpm 2 - - Flange Mount 38mm 80mm 256mm
RS Stock No. 424-166
Mfr. Part No.M91Z90G4GGA
BrandPanasonic
£212.40
Each
Units
90 W - - Induction 230 V 1 1250 rpm @ 230 V 4 - - - - - 90mm
RS Stock No. 440-414
Mfr. Part No.82540001
BrandCrouzet
£101.61
Each
Units
2.65 W - - Synchronous 230 → 240 V 2 250 rpm @ 240 V 24 - - - 6mm 13mm -
RS Stock No. 424-087
Mfr. Part No.M9MZ90GK4CGA
BrandPanasonic
£225.25
Each
Units
90 W - - Induction 400 V 3 1350 rpm @ 415 V 4 - - - - - 90mm