HARMNEE PWM DC Motor Speed Controller 10-55V, 60A / 100A Peak, LED Display, Forward-Brake-Reverse

The HARMNEE PWM DC Motor Speed Controller is designed for hobbyists and professionals who need smooth, reliable control of DC brush motors. Built to handle demanding workloads, this compact module delivers precise speed management and versatile direction control in a sturdy aluminum enclosure that fits neatly into small control panels or project boxes.

Key specifications at a glance

• Input voltage range: DC 10 to 55 V
• Rated current: 60 A; maximum surge: 100 A
• Speed range: 0 to 100 percent of rated speed
• Application: designed for DC brush motors only

With these capabilities, you can tailor performance to different loads and operating conditions without guessing or risking motor damage. The controller supports quick adjustments while remaining compact enough for integrated builds.

Precise control with clear feedback

The potentiometer knob allows smooth, incremental speed adjustments from idle to full power. An integrated LED display shows the real-time speed percentage, helping you dial in the exact performance you want. The plastic cap can be separated from the knob to simplify panel installation and access during setup.

• Real-time speed readouts for confident tuning
• Fine 0–100% control for variable loads

Direction control at a glance

Switch between clockwise and counterclockwise rotation with a dedicated latching CW/CCW switch. This provides flexible motor orientation for different mechanical layouts and tasks without needing extra controllers.

• CW and CCW options for reversible operation
• Simple, reliable direction control in one module

High-efficiency design and robust build

• Power handling achieved with 2x 100 A relays, 4 high frequency capacitors, and 12 high voltage MOS tubes
• Aluminium enclosure protects the circuit and aids cooling, helping long-term reliability

These components are arranged for efficient performance and durable operation, even in duty cycles that push the motor near its rated limits. The design emphasizes steady control and clear electrical feedback, enabling you to optimize your project’s motion profile with confidence.

Easy installation and panel mounting

The unit includes a wiring diagram for straightforward connections, and the back of the shell provides mounting holes for secure placement in cabinets or control panels. The compact form factor makes it suitable for compact machines, robotic projects, or DIY automation setups.

In practice, this controller suits a variety of setups, from small robotics projects to hobby machines and customized automation tasks. It offers a practical set of features to explore speed, direction, and load responses, presenting possibilities rather than guarantees for how you design your system.