Pots are variable resistors and if the resistance is higher than the rest of the circuit loop it reduces the current. but you must choose wisely so that the power and voltage ratings are not exceeded.
other info related to current limits
Also, Pots can be made with Wire-wound (WW) for higher current, Cermet ( a resistive carbon-ceramic) material and metal film. (MF)
More commonly today with MF plastic and a metallized coating embedded are used for reduced cost and smooth wiper action.
These MF pots cannot handle much current or power at all and especially if you apply a constant voltage near 0 Ohms where the wiper almost reaches an end terminal.
There are also many kinds of physical pots. Including; Linear, audio-log, sin-cos rotary, sliders and trimmers or trim pots.
With Volume Controls on consumer goods and cars, Pots have been replaced with continuous rotary encoder dials using dual rotary tracks and wipers that are staggered by 90 deg to sense small angular motion digitally.
As always, the current limit is defined by the datasheet specification by the power level or wiper current so that the P=I^2R =V^2/R does not melt the conductor.
If you need to regulate high current then a transistor(s) with high current gain or a FET with voltage controlled transconductance or ON resistance in a Power FET is biased by a pot to become the higher current conductor.