DC 9-55V 40A PWM Motor Speed Controller – 2000W Module

Gaqqee 2000W High-Power PWM Motor Speed Controller

Take precise command of your DC motors with this heavy-duty PWM Motor Speed Controller from Gaqqee. Capable of handling up to 40A continuous output current and a 2000W continuous power rating, this drive module is engineered for demanding applications — from industrial automation and DIY robotics to electric fans, pumps, conveyor systems, and power tools. A simple potentiometer knob gives you smooth, linear speed adjustment from 0 to 100%, making it one of the most user-friendly high-power drive modules available.

Made in Mainland China.

Key Features

• Wide Input Voltage Range: DC 9V–55V — compatible with a broad range of battery and power supply setups
• High Current Capacity: 0–40A output current with 2000W continuous power handling
• Full-Range Speed Control: 0–100% speed regulation via a 100K linear potentiometer (included)
• 25kHz PWM Control Frequency: Near-silent operation with minimal electromagnetic interference
• Current Regulation Method: Delivers stable, linear voltage under load for consistent motor performance
• Low Power Consumption: Efficient drive circuit minimises heat generation during operation
• Barrier-Type Terminal Blocks: Secure, screw-down wiring connections for reliable high-current circuits
• Compact & Mountable: Board dimensions 72mm × 48mm with a 7mm potentiometer mounting hole for easy panel installation

Technical Specifications

What's in the Box?

• 1× Gaqqee DC 9-55V 40A PWM Motor Speed Controller Module

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Frequently Asked Questions

Q: What types of DC motors is this PWM speed controller compatible with?

A: This PWM motor speed controller is compatible with most brushed DC motors operating within the DC 9V–55V input voltage range and drawing up to 40A continuous current. It is commonly used with motors in fans, pumps, electric vehicles, conveyor belts, DIY robotics, and power tool applications.

Q: How do I adjust the motor speed with this controller?

A: Speed is adjusted using the onboard linear potentiometer knob (100K). Turning the knob smoothly varies the output from 0% (fully stopped) to 100% (full speed), giving you precise, stepless control over your motor's RPM via current regulation.

Q: Does this module require a heatsink or cooling fan?

A: The module is designed for low power consumption and efficient switching at 25kHz to minimise heat. However, when operating continuously near maximum load (40A / 2000W), attaching an external heatsink or providing active airflow is strongly recommended to maintain optimal performance and component longevity.

Q: What is the significance of the 25kHz PWM control frequency?

A: A 25kHz switching frequency is above the human audible range (20Hz–20kHz), which means the controller operates near-silently — avoiding the annoying high-pitched whine associated with lower-frequency PWM controllers. It also reduces electromagnetic interference (EMI) in sensitive electronic environments.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.