Knob Switches | McMaster-Carr

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487 Products

Electrical Power, Networking, and Controlling

Lever Switches

Grip and twist the lever to turn circuits on and off, preventing accidental actuation

155 products

Rotary Switches

Control multiple devices with a single switch

13 products

Battery Switches

Turn the knob to alternate between two batteries without interrupting power

1 product

Push-Button Switches

Our most common switch type actuates circuits with the push of a button

42 products

Timer Switches

Automatically turn electrical equipment on or off after a set interval

52 products

Key Switches

Turn a key to actuate circuits, preventing accidental start and limiting access

7 products

Potentiometers

Control speed, volume, and light intensity by varying electrical flow; also known as rheostats

19 products

Timer Relays

Turn machinery on or off after receiving an electrical signal that starts the timer

108 products

Building and Machinery Hardware

Indicating Knobs

Control devices and view settings at a glance

89 products