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Rotary switch knobs are control knobs that fit various types of rotary switches, [rotary encoders](/web/c/automation-control-gear/sensors-transducers/rotary-encoders/) and shafts. They play an important role in making a device easier to control by adjusting levels. The degree of rotation applied to the switch knob corresponds to the desired input.

**How do rotary switch knobs work?**

Once connected to a switch, rotary switch knobs typically work with a clockwise rotation producing an increased input. They are controlled by hand, with a scale or pointer to help achieve the right setting. Rotary switch knobs often have contoured or ridged sides for grip and ease of use.

**Types of rotary switch knobs**

Rotary switch knobs come in a selection of shaft diameters, making them suitable for use with a wide range of switches. Most switch knobs are made from polyester or nylon and have a brass insert for a tighter fit with the shaft. Choosing the right switch depends on the application. There are right angle, through-hole mounting and surface mount versions with press-on and set-screw attachments. They are designed with slits or lines to display the current selection on the switch and come in a selection of colours.



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Rotary Switch Knobs, Rotary Switch Knob Replacements | RS

Rotary Switch Knobs

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