4000W AC Motor Speed Controller – Variable Voltage Regulator 120V 15A With Overload Protection, Flame-Retardant, Stepless Control For Fans & Brushed Tools

About This Product

Need to dial in the speed of a fan, motor, or electric tool?
This AC motor speed controller gives you smooth, stepless control from zero to full voltage.

It plugs into standard US 120V outlets and handles up to 15A with a peak power of 4000W – though keep in mind the actual limits depend on your load: resistive loads like heating elements up to 2000W, inductive loads like fans up to 500W, and capacitive loads up to 300W.
The knob adjusts output voltage from 0-110V with zero lag or response delay, so you get instant changes.

It also has an overload protection function that kicks in between 10-15A to protect your gear from surges.
The housing is made from flame-retardant thickened plastic that resists heat and impact.

This controller is super versatile – use it for fans, brushed power tools, tungsten lamps, heaters, electric stoves, and even dimming incandescent lights.

But note: it won't work with smart devices, pumps with capacitors, or motors that already have built-in speed controls.
Simple, effective, and built to last.