4000W AC SCR Voltage Regulator & Motor Speed Controller
4000W AC SCR Voltage Regulator & Motor Speed Controller
4000W AC SCR Electric Voltage Regulator & Motor Speed Controller
Take precise control of your electrical loads with this powerful 4000W AC SCR Voltage Regulator and Motor Speed Controller. Designed for versatility and reliability, this compact unit lets you dial in the exact voltage output you need — from 0 to 220V AC — using a smooth, easy-to-operate rotary knob. Whether you're managing resistive heating loads, controlling the speed of a single-phase AC motor, or dimming incandescent lighting, this SCR (Silicon Controlled Rectifier) controller delivers consistent, dependable performance.
Key Features
- Wide Power Capacity: Handles up to 4000W peak load, making it suitable for demanding applications.
- Full Voltage Range: Adjustable from 0 to 220V AC for precise, stepless control.
- SCR Thyristor Technology: Provides smooth, efficient regulation for resistive loads including heating wire and incandescent lamps, as well as most single-phase AC motors.
- Compact & Sturdy Design: Dimensions of 85mm (L) × 55mm (W) × 38mm (H) make it easy to integrate into panels, enclosures, or workbenches. Knob inner hole diameter: 6mm.
- Plug-and-Play Ready: Simple to install and operate right out of the box — no complex wiring expertise required.
- Recommended Load: Long-term resistive load is recommended to be kept within 2000W for continuous, sustained operation. Peak capacity reaches 4000W.
Ideal Uses
- Heating element speed/temperature control (e.g., heating wire, soldering stations)
- Dimming incandescent lamps and lighting circuits
- Speed control for single-phase AC motors (fans, pumps, small power tools)
- DIY electronics, workshop, and laboratory applications
- Home & garden power management tasks
Specifications
- Input Voltage: AC 220V
- Output Voltage: 0–220V AC (adjustable)
- Max Power: 4000W (peak); 2000W recommended for continuous resistive loads
- Controller Type: SCR (Silicon Controlled Rectifier / Thyristor)
- Dimensions: 85 × 55 × 38 mm
- Knob Inner Hole: 6mm
- Compatible Loads: Resistive loads (heating wire, incandescent lamps); most single-phase AC motors
Important Note: This controller is optimized for resistive loads and most single-phase AC motors. Compatibility with other load types (e.g., inductive or capacitive loads, variable-frequency drives, LED bulbs) is not guaranteed. Always verify your load type before use.
For guidance on electrical safety and best practices when working with voltage control equipment, visit the OSHA Electrical Safety resource.
Frequently Asked Questions
Q: What types of loads is the 4000W AC SCR Voltage Regulator compatible with?
A: This SCR voltage regulator and motor speed controller is best suited for resistive loads such as heating wires and incandescent lamps, as well as most single-phase AC motors. It is not guaranteed to work with inductive loads, LED drivers, or other complex load types. Always confirm your application is compatible before connecting.
Q: What is the difference between the 4000W peak rating and the 2000W recommended load?
A: The 4000W rating refers to the controller's maximum peak capacity for short-duration or intermittent loads. For continuous, long-term operation, it is recommended to keep the resistive load at or below 2000W to ensure reliable performance and extend the unit's lifespan.
Q: How do I adjust the output voltage on this SCR controller?
A: Simply turn the rotary knob (6mm inner hole diameter) to smoothly adjust the AC output voltage from 0V up to 220V. The stepless adjustment gives you precise control over motor speed, heating intensity, or lighting dimming levels — no additional tools or complex setup required.
Q: Can this voltage regulator be used for LED dimming?
A: This SCR controller is designed for resistive and most single-phase AC motor loads. Standard LEDs and LED drivers use a different type of circuitry and are generally not compatible with SCR-based dimmers. For LED dimming, a purpose-built LED dimmer is recommended.