3 Position Rotary Switches

For switching arrangements that need to offer more than two (on-off) positions - commonly referred to as an in-line or two-pole switch - rotary switches are a very common choice across industrial settings, workshop spaces and machine setups of all types.

What are the uses of a 3-pole rotary switch?

Our broad selection of three-position rotary switches are supplied by a roster of leading designers and manufacturers, such as Siemens, Grayhill, Kraus & Naimer, ABB, Eaton, and Schneider Electric. Typical applications might include:

  • Audio equipment dials for volume control
  • Adjustment of various other input-output values in a wide range of electrical equipment and instruments
  • Controlling the speed of conveyor belts and conveyor components
  • Step-control of AC/DC motors and drive speeds
  • Pilot controls in aircraft and other vehicles
  • Medical and diagnostic equipment dials
  • Construction and agricultural machinery controls

How does a 3 position rotary switch work?

  • Like all rotary switches, a 3-position switch allows the user to choose between three possible states that the switch can be set to as needed - a fairly typical example might be ‘1-2-Off’ or similar
    • This allows for slightly more varied input speeds or sensitivities to be dialled in, as opposed to simply having the option to either ‘stop’ or ‘go’
  • A 3-pole rotary switch will normally turn around a spindle connected to a shaft assembly, and be set up so as to make contact with the various different attached electrical circuits as it turns
    • In this way, rotary switches are capable of incorporating greater numbers of poles and throws than most other types of simple in-line switches
  • Like most rotary switches, the majority of 3-position variants are stepped - this means that the switch clicks decisively into place at each of the three poles, and can’t easily be left between positions

Rotary switches are extremely common HMI (human-machine interface) components used across numerous kinds of industrial and domestic machinery or equipment, as well as in a wide range of smaller electronic and digital consumer appliances.

As a traditional switch format, they’re often still preferred over modern alternative control input methods (for example touch-screens), especially in applications where software error could be problematic or hazardous.


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Description Price Pole and Throw Configuration Series Normal State Configuration Electrical Phase Maximum Current Maximum Voltage Number of Positions Terminal Type Angle of Throw Length Width Depth Actuator Type Dimensions
RS Stock No. 222-5936
Mfr. Part No.CA10 A401/GBA001 *FT
£18.05
Each
Units
- - - 3 20 A 240 V 3 Screw 60° 48mm 48mm - Rotary Knob -
RS Stock No. 453-3138
Mfr. Part No.3SB3500-2EA11
BrandSiemens
£9.42
Each
Units
- - - - - - 3 - - - - - Knob, Spring Return -
RS Stock No. 350-5615
Mfr. Part No.CHR10A401/GBA001 * FT
£18.43
Each
Units
- - - 3 20 A 690 V 3 - 60° 48mm 48mm - Rotary Knob -
RS Stock No. 323-599
Mfr. Part No.CA10 A210 600
£11.58
Each
Units
SP - NO/NC - 20 A 690 V 3 - 60° 51.7mm 48mm - Rotary Knob -
RS Stock No. 323-606
Mfr. Part No.CA10 A211 600
£15.84
Each
Units
DP - NO/NC - 20 A 690 V 3 - 60° 61.2mm 48mm - Rotary Knob -
RS Stock No. 758-579
Mfr. Part No.CA20A211/GBA001E
£21.98
Each
Units
DP - NO/NC - 20 A - 3 - - 48mm 48mm 48.6mm Rotary Knob 48 x 48 x 48.6 mm
RS Stock No. 453-3122
Mfr. Part No.3SB3500-2DA11
BrandSiemens
£9.42
Each
Units
- - - - - - 3 - - - - - Knob, Stay Put -
RS Stock No. 222-5964
Mfr. Part No.CA10A216/GBA001*FT
£20.09
Each
Units
3P - NO/NC - 20 A 690 V 3 - 60° 48mm 48mm - Knob, Spring Return -
RS Stock No. 609-6041
Mfr. Part No.XB5AD33
£17.18
Each
Units
- Harmony XB5 2NO - 6 A ac, 550 mA dc 600 V ac/dc 3 Screw 45° 41.5mm 30mm 70mm Handle, Stay Put 41.5 x 30 x 70 mm
RS Stock No. 758-608
Mfr. Part No.C42A211/GBA001E
£55.59
Each
Units
DP - NO/NC - 63 A - 3 - - 64mm 64mm 71.3mm Rotary Knob 64 x 64 x 71.3 mm
RS Stock No. 609-5414
Mfr. Part No.XB4BJ33
£18.85
Each
Units
- Harmony XB4 2NO - 6 A ac, 550 mA dc 600 V ac/dc 3 Screw 45° 51.3mm 30mm 70mm Handle, Stay Put 51.3 x 30 x 70 mm
RS Stock No. 323-656
Mfr. Part No.CA10 A230 600
£14.18
Each
Units
SP - 2NO/NC - 20 A 690 V 3 - 60° 61.2mm 48mm - Rotary Knob -
RS Stock No. 340-308
Mfr. Part No.CG4A212/GBA128EF
£19.38
Each
Units
3P - 3NO/3NC - 10 A 500 V ac 3 Screw 60° 28mm 30mm 62.5mm Rotary Knob 28 x 30 x 62.5 mm
RS Stock No. 340-291
Mfr. Part No.CG4A210/GBA127EF
£11.42
Each
Units
SP - NO/NC - 10 A 440 V 3 - - 30mm 30mm 38.5mm Rotary Knob 30 x 30 x 38.5 mm
RS Stock No. 222-5829
Mfr. Part No.CA10 A362/GBA001 *FT
£32.84
Each
Units
6P - NO/NC - 20 A 690 V 3 - 60° 48mm 48mm - Rotary Knob -
RS Stock No. 257-9570
Mfr. Part No.T0-4-8213/E + EZ-P1
BrandEaton
£29.63
Each
Units
4P - NO/NC - 20 A 690 V ac 3 Screw 60° 48mm 48mm 100mm Toggle 48 x 48 x 100 mm
RS Stock No. 222-5841
Mfr. Part No.CA10 A270/GBA001 *FT
£26.94
Each
Units
3P - 6NO/3NC - 20 A 690 V 3 - 60° 48mm 48mm - Rotary Knob -
RS Stock No. 705-0992
Mfr. Part No.1SCA022532R7820
BrandABB
£43.94
Each
Units
3P - - - 25 A 600 V 3 Screw 60° 69.5mm 45mm 117mm Key 69.5 x 45 x 117 mm
RS Stock No. 293-7156
Mfr. Part No.C26A270/GBA001E
£57.96
Each
Units
3P - - - 32 A 690 V 3 - - 64mm 64mm 91.8mm Rotary Knob 64 x 64 x 91.8 mm
RS Stock No. 609-6063
Mfr. Part No.XB5AG03
£34.00
Each
Units
- Harmony XB5 2NO - - - 3 Screw 45° 42mm 30mm 96mm Key, Stay Put -