Knob Switches | McMaster-Carr

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Actuator Style

System of Measurement

Switching Voltage

Number of Positions

Switch Action

Maintained

Momentary

Number of Terminals

Number of Circuits Controlled

Panel Cutout Diameter

Switching Current

Actuator Color

Switch Starting Position

Illumination

Input Voltage

Switch Designation

Environment

High-Pressure Washdown

Hole Diameter

Wire Connection

Position Designation

Mounting Location

Shaft Type

Color

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

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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

130 products

Battery Switches

Turn the knob to alternate between two batteries without interrupting power

1 product

Timer Switches

Automatically turn electrical equipment on or off after a set interval

52 products

Push-Button Switches

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

42 products

Key Switches

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

3 products

Potentiometers

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

16 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

Measuring and Inspecting

Rotary Switches

Control multiple devices with a single switch

11 products