Variable resistor symbol
Also called Rheostat, Adjustable resistor
A resistor whose resistance can be adjusted. The diagonal arrow through the symbol means variable.
ANSI / IEEE
IEC 60617
What the variable resistor symbol means
A resistor whose resistance can be adjusted. The diagonal arrow through the symbol means variable.
ANSI and IEC symbols
Where you see it
Trimming, adjustable current limiting and rheostats for motors and lamps.
What is written next to it
On a schematic, the variable resistor usually carries its designator and maximum resistance, such as R2 0 to 10 kΩ.
Related symbols
Frequently asked questions
What does the variable resistor symbol look like?
On ANSI drawings: A zigzag with a diagonal arrow through it. In IEC 60617: A rectangle with a diagonal arrow through it.
Is the variable resistor symbol the same in IEC and ANSI?
No. A rectangle with a diagonal arrow through it.
Where is a variable resistor used?
Trimming, adjustable current limiting and rheostats for motors and lamps.
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