Potentiometer Controls | McMaster-Carr

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151 Products

Switches

Potentiometers

Vary electrical flow to control speed, volume, and light intensity. Also known as variable output switches.

Digital Potentiometers

More precise than analog potentiometers, these have a three-digit display that is easy to read.

Harsh Environment Potentiometers

Rated NEMA 13, these potentiometers protect against debris and splashing oil and coolant.

Panel Seals for Potentiometers

Create a seal around a potentiometer shaft to keep out moisture and dust.

Linear Motion Potentiometers

Pair these potentiometers with a controller to monitor the position of moving parts or send instructions to an electrical system.

Light Dimmers

Adjust the brightness of lights.

Multi-Way Light Dimmers

Often used in large, open workspaces, these switches can be wired on opposite ends of the room to control the brightness of lights on the same circuit. They're also known as three-way switches.

Variable-Speed Foot Switches

When the pedal is pressed, the built-in potentiometer adjusts the resistance to vary the speed for motor drives.

Enclosed AC to DC Motor Speed Controls

Reversing Enclosed AC to DC Motor Speed Controls

Use these controls with motors that run forward and backward, such as motors for conveyor belts.

Knobs

Turn-Counting Indicating Knobs

For monitoring the number of shaft turns on instrumentation, these knobs have easy-to-read scales or digits for quick and accurate readings. Use them on devices with round shafts.

Dual-Control Comfort-Grip Indicating Knobs

These dual-control knobs operate independently to control two settings. They have a rubber coating for a comfortable grip. Use them on devices with round shafts to view settings at a glance with a pointer.

Indicating Knobs

Control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Comfort-Grip Indicating Knobs

A rubber coating or construction provides a comfortable grip. Use these knobs to control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Choose-a-Color Indicating Knobs

Quickly identify equipment controls and components by their color. Use these knobs to control devices with round shafts and view settings at a glance with a pointer.

Screw-Head Mount Precise-Control Knobs

To build a custom precise-control knob or thumb screw, pair one of these knobs with a socket head screw. Turn the knob to move the screw 0.005" per graduation and make precise adjustments.

Threaded-Stud Precise-Control Knobs

Mount these knobs into a threaded hole. Turn the knob to move the stud 0.005" per graduation and make precise adjustments.

Ceiling Fan Speed Controls

Convert one or more single-speed ceiling fans to variable speed.

Speaker Volume Controls

Wire one of these controls between your speakers and amplifier to adjust the volume.