DC 12-36V 40A PWM Brush Motor Speed Controller & Governor
DC 12-36V 40A PWM Brush Motor Speed Controller & Governor
DC 12–36V 40A PWM Brush Motor Speed Controller with Potentiometer
Take precise control of your DC brush motor with this robust PWM Motor Speed Controller. Designed for a wide input voltage range of 12V to 36V and a continuous current rating of 40A (peak 60A), this governor delivers smooth, stepless speed regulation from 0% to 100%. The built-in 21 kHz control frequency ensures quiet, efficient operation with minimal electromagnetic interference — ideal for DIY projects, industrial equipment, electric vehicles, conveyor systems, and more.
The integrated potentiometer with on/off switch makes adjustment intuitive and straightforward. Its compact, panel-mount design fits neatly into enclosures, control boxes, and custom builds. Made in Mainland China.
Key Features
- Wide Voltage Range: Compatible with DC 12V, 24V, and 36V systems
- High Continuous Current: 40A continuous / 60A peak output for demanding applications
- Full Speed Range: Stepless 0%–100% speed regulation via potentiometer
- 21 kHz PWM Frequency: Smooth, low-noise motor control with reduced heat generation
- Built-in Switch: Potentiometer includes an integrated on/off switch for added convenience
- Compact Panel Design: Easy panel mounting with a center distance of 119mm
- Linear Output Under Load: Consistent voltage output for stable motor performance
Specifications
| Input Voltage | DC 12V – 36V |
| Output Voltage | Linear under load |
| Peak Output Current | 60A |
| Continuous Current | 40A |
| Speed Range | 0% – 100% |
| Control Frequency | 21 kHz |
| Speed Regulation Mode | Potentiometer with switch |
| Panel Size | 88 × 48 × 26 mm |
| Panel Mounting Size | 83 × 44 mm |
| Overall Product Size | 110 × 71 × 37 mm |
| Mounting Center Distance | 119 mm |
| Motor Type | DC Brush Motor |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1× PWM Motor Speed Controller / Governor
Notes
- Due to lighting and screen differences, the item's color may vary slightly from the pictures.
- Please allow 1mm–10mm differences due to manual measurement.
Learn More About Electrical Safety
When working with DC motor controllers and high-current wiring, always follow proper electrical safety guidelines. Visit OSHA's Electrical Safety Resources for best practices on safely handling electrical components and systems.
Frequently Asked Questions
Q: What types of motors is this PWM speed controller compatible with?
A: This controller is designed specifically for DC brush motors operating within a 12V to 36V range. It is not suitable for brushless motors, AC motors, or stepper motors. Always verify your motor's voltage and current ratings before connecting.
Q: What is the difference between the 40A continuous current and the 60A peak current rating?
A: The 40A continuous current is the safe, sustained load the controller can handle during normal operation. The 60A peak rating refers to the short-term maximum current the unit can tolerate during motor startup or load spikes. For reliable long-term use, ensure your motor's running current stays at or below 40A.
Q: How do I mount this motor speed controller in a panel or enclosure?
A: The controller features a panel mounting cutout of 83 × 44 mm and a mounting center distance of 119 mm. Simply cut the appropriate opening in your enclosure panel, insert the unit, and secure it using the provided mounting holes. The compact 110 × 71 × 37 mm overall footprint fits most standard control boxes.
Q: Can I use this controller for a 24V electric scooter or bike motor?
A: Yes — as long as your motor is a DC brush type operating at 24V and drawing no more than 40A continuously, this PWM governor is a suitable choice. Always double-check your motor's specifications and ensure proper fusing and wiring gauge for your application.