PWM DC Motor Speed Controller 9–60V 20A Pulse Width Modulator
PWM DC Motor Speed Controller 9–60V 20A Pulse Width Modulator
Stepless PWM DC Motor Speed Controller — 9V to 60V, 20A Max
Take precise command of any DC motor with this compact, high-performance PWM Motor Speed Controller. Whether you're building a DIY project, automating workshop equipment, or upgrading industrial machinery, this stepless regulator delivers smooth, accurate speed control from 0% to 100% — all in a rugged aluminum alloy housing.
Key Features
- Wide Voltage Range: Compatible with DC 9V to 60V power supplies (12V, 24V, 48V, and more), making it versatile for a broad range of motors and applications.
- Precise PWM Speed Control: Adjusts motor speed by modifying the duty cycle of the PWM signal at 25 kHz, enabling smooth, stepless speed regulation from 0% to 100%.
- Forward & Reverse Direction Control: Supports both clockwise and counter-clockwise rotation — simply switch the direction signal to reverse motor operation.
- Built-In Protection: Equipped with overcurrent, overheating, and overvoltage protection to ensure long-term reliability for both the controller and connected motor.
- Compact Aluminum Alloy Build: Measures just 92 × 52 × 36 mm and weighs only 135 g — easy to integrate into tight enclosures or mechanical assemblies.
- Simple Potentiometer Adjustment: Speed is adjusted via an onboard potentiometer — no complex programming or external components required.
Technical Specifications
| Working Voltage | DC 9V – 60V |
| Maximum Current | 20A |
| Continuous Current | 18A |
| Speed Adjustment Range | 0% – 100% |
| PWM Frequency | 25 kHz |
| Output Voltage | Linear with load |
| Adjustment Method | Onboard potentiometer |
| Motor Type | DC Motor |
| Dimensions | 92 × 52 × 36 mm / 3.62 × 2.05 × 1.42 in |
| Weight | 135 g |
What's in the Box?
- 1 × DC Motor Speed Controller (PWM)
Made in Mainland China.
Note: Due to monitor calibration differences, actual product color may vary slightly from images. Please allow ±1–2 cm measurement tolerance due to manual measurement.
For guidance on electrical safety when working with DC motor control systems, refer to the OSHA Electrical Safety Guidelines.
Frequently Asked Questions
Q: What types of DC motors are compatible with this PWM speed controller?
A: This PWM DC motor speed controller is compatible with most brushed DC motors operating between 9V and 60V. It is ideal for motors used in DIY projects, electric fans, pumps, conveyors, drills, and other machinery that draw up to 20A at peak load.
Q: Can I use this controller with a 12V or 24V power supply?
A: Yes — the controller supports the full DC 9V to 60V range, so it works seamlessly with common 12V, 24V, 36V, and 48V power supplies. Simply connect your supply within this range and use the potentiometer to adjust motor speed.
Q: Does this motor speed controller support reversing the motor direction?
A: Yes. The controller includes forward and reverse direction control. You can change the motor's rotation direction by switching the direction signal input, giving you full bidirectional control over your motor's operation.
Q: What safety protections does this PWM motor driver include?
A: The controller features built-in overcurrent protection, overheating protection, and overvoltage protection. These safeguards help prevent damage to both the controller and the connected motor under abnormal operating conditions, extending the service life of your equipment.