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.

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
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.
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
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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