4000W AC SCR Voltage Regulator Dimmer 0-220V AC Module
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Prices updated: 13 Oct 2026
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About this product
A single-phase SCR (thyristor) AC voltage regulator module that adjusts 220V AC output from 0 to 220V for resistive loads such as incandescent lamps and heaters. Maximum rating is 4000W, and the listing recommends about 2000W for long-term resistive use. It works on mains voltage, so it must be installed in a suitable insulated enclosure.
Specifications
- Maximum power
- 4000 W (resistive load)
- Recommended long-term load
- Within 2000 W (resistive)
- Input voltage
- AC 220 V
- Output voltage range
- AC 0–220 V
- Efficiency
- More than 90%
- Size (L x W x H)
- 85 × 55 × 38 mm
- Suitable loads
- Resistive loads (incandescent lamps, heaters)
Frequently asked questions
What loads is this regulator suitable for?
It is designed for resistive loads. Single-phase AC motors may work but are not guaranteed, and other load types should be confirmed before use.
In what order should I connect the load?
Connect the load before adjusting the regulator, as the listing specifies. Because the device works on mains voltage, disconnect power while wiring and keep the unit insulated and enclosed.
