A potentiometer is a variable resistor with three terminals. Two terminals are connected to ends of a resistive element, and a third terminal connects to a sliding contact that can move over the resistive element. The position of the wiper determines output voltage. Single-turn rotary potentiometers are some of the most common variable resistance devices found in electronics today, with a wide range of uses across many applications and industries.

In industrial applications, potentiometers are used to finely tune the behavior of circuit, giving users manual control over the operation of machinery or components. They are also widely used for calibration and tuning purposes, often included in component design as presets that are typically fixed and only adjusted if necessary. These types of potentiometers are called trimpots and require tools, like a flat head screwdriver, to change resistance.

Potentiometers are favored in applications that require high resolution like making precise volume or speed adjustments, changing frequencies, and dividing voltage.

KU Series Image
  • Hot Molded Carbon Element
  • Gold-Plated Terminals
  • Stainless Steel Shaft and Housing
Precision series KU potentiometers are suitable for both military and commercial applications. They can easily be customized to meet special requirements.
SPECTROL 534 Series Image
  • 100 to 100K Ohm
  • +/- 5% Tolerance
  • 2 Watts
  • 10 Turn Precision Winding
  • Panel Mount
Spectrol 534 Series Precision Potentiometers from NTE offer a wide range of resistances at up to 2 Watts, with a close tolerance of +/- 5%. These pots feature gold plated terminals and internal tracking surfaces, and a precision winding with excellent linearity.
  • Permanickel Contact
  • Gold Plated Terminals
  • Stainless Steel .25" Shaft
MT Series Image
  • Potentiometer Operator
  • Knob
  • Black
  • Wattage: 2 Watts
  • Mounting Style: Panel Mount
Potentiometer operators in a knob style. Black in color with a wattage of two Watts and a panel mount mounting type.
M22 Series Image
  • Scale Markings on the Knob Allows the Operator to Be Used Without an Additional Legend Plate
  • Oversized Knob Option Available
  • Slim Design Allows for Space Saving and Simple Wiring and Installation
  • Protection Types Include IP66 and NEMA 4X, 13
  • Resistive Elements Range from 1k to 470k Ohms
Eaton's M22 potentiometers allow for a ready to use operator in a conveniently sized package. M22 potentiometers include the resistive element, instead of just a knob, and a built in legend surrounding the knob. The slim design, with integrated contacts and the range of resistances available, allows for a quick install.
10250T Series Image
  • 30.5 mm Mounting Size
  • Incandescent or LED Types
  • Standard Screw Terminals
Eaton's 10250T Series features a zinc die cast construction with chromeplated housing and mounting nut. These devices incorporate a presstotest feature whereby depressing the lens disconnects the light from the source being monitored and connects the lamp to a continuously energized circuit for immediate test for a faulty lamp. All operators also incorporate grounding nibs to enhance the ground connection when the device is securely tightened.
  • Heavy-Duty Oiltight Design
  • NEMA 1,2,3,3R,4,4X,12,13; IP65
  • Easy to Assemble
LPCPA Series Image
  • IP66, IP67, IP69K, and UL Type 4X Protection
  • Linear Operation
  • Cermet Resistive Material
Lovato’s Monoblock LPCPA series Potentiometers are available in 7 resistor values: 1ohm, 2.5ohm, 5ohm, 10ohm, 50ohm, 100ohm, and 500ohm.
LM2T Series Image
  • Graduated Scale or Variable Index Displayed on Face
  • Suitable for Potentiometers with 6-6.3mm/0.24-0.25in Shaft Diameter
  • Minimum Shaft Length of 40mm/1.6in
  • IP65 Rated
  • Mechanical Life of 300,000 Cycles
MP1 Series Image
  • Potentiometer Operator
  • Potentiometer Included
  • Resistance: 5K Ohms
  • Termination: Screw
  • Wattage: 2 Watts
Black knob potentiometer operator. Has a panel mount with older lead. Contains a high resistance for use in both commercial and industrial settings.
E34 Series Image
  • Vertical or Horizontal One-Hole Mounting
  • Linear Type ±10%
  • Resistive Elements Range from 1k to 50k Ohms (Operator Only Model Also Available)
  • Protection Types Include UL (NEMA) Type 3, 3R, 4, 4X, 12, 13
  • Large Dial Plate with Space for Legend is Available
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