--- product_id: 206202711 title: "PWM DC Motor Speed Controller, DC 10-55V / Rated 40A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch" brand: "harmnee" price: "S/.147" currency: PEN in_stock: true reviews_count: 9 category: "Harmnee" url: https://www.desertcart.pe/products/206202711-pwm-dc-motor-speed-controller-dc-10-55v-rated-40a store_origin: PE region: Peru --- # 40A rated current power LED speed display Forward-Brake-Reverse switch PWM DC Motor Speed Controller, DC 10-55V / Rated 40A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch **Brand:** harmnee **Price:** S/.147 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your motor’s speed and direction like a pro — no compromises, just control. ## Quick Answers - **What is this?** PWM DC Motor Speed Controller, DC 10-55V / Rated 40A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch by harmnee - **How much does it cost?** S/.147 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/206202711-pwm-dc-motor-speed-controller-dc-10-55v-rated-40a) ## Best For - harmnee enthusiasts ## Why This Product - Trusted harmnee brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last & Cool:** Durable aluminum enclosure with optimized heat dissipation for nonstop performance - • **Plug & Play Confidence:** Easy setup with included connectors and reliable performance out of the box - • **Precision Speed Tuning:** Stepless potentiometer knob with real-time LED display from 0% to 100% speed - • **Seamless Direction Control:** Intuitive forward, brake, and reverse switch for ultimate operational flexibility - • **Power Through Your Projects:** Robust 40A rated current with 60A max surge for heavy-duty motor control ## Overview The HARMNEE PWM DC Motor Speed Controller supports DC 10-55V input with a rated current of 40A and max 60A, featuring a stepless potentiometer for smooth speed adjustment and an LED display for precise monitoring. Its forward-brake-reverse switch offers versatile motor direction control, all housed in a rugged aluminum case designed for excellent heat dissipation. Ideal for brush motor speed regulation and light dimming, this controller delivers professional-grade performance with easy installation and reliable durability. ## Description Professional Team: HARMNEE HARMNEE focuses on motor DIY lovers. We devote to make DC and AC motor speed controller to take you good use experience! Good Products on Sale DC 10-55V/Max 60A Motor Speed Controller Good Products on Sale DC 10-55V/Max 60A Motor Speed Controller DC Mottor Speed Controllers AC Voltage REgulator What kind of motor can HARMNEE motor controller fit for? We have 2 kinds of motor controller available. 5 DC motor speed controllers can be applied on your DC motors. We also have 2 AC motor controllers. You can choose that one you like. What parameters do you need to pay attention to when you buyc You need to pay attention to 2 parameters, input voltage and rated current. They are the most important parameters. After-Sales Service Team!!! If you have any problem, contact HARMNEE by desertcart. We can provide timely after-sales service. What kind of motor can HARMNEE motor controller fit for? We have 2 kinds of motor controller available. 5 DC motor speed controllers can be applied on your DC motors. We also have 2 AC motor controllers. You can choose that one you like. What parameters do you need to pay attention to when you buyc You need to pay attention to 2 parameters, input voltage and rated current. They are the most important parameters. After-Sales Service Team!!! If you have any problem, contact HARMNEE by desertcart. We can provide timely after-sales service. Review: Impressive results, right out of the box! - I was really impressed with this item! It came with connectors and a couple little extras. After about 10 mins of setup, not only did it look slick, but, it functions EXACTLY as described! Just what I needed for my highbanker pump! For anyone here doing the a similar project: - (x1) Harmnee Controller - (x1) Prospector's Dream Bac-Pac series highbanker. - (x1) 2,000 gph bilge pump - (x1) 12v 20ah Dakota Lithium battery - Misc. roll of 16ga wire. I've run it in the bath tub for over an hour, at all different speeds. Haven't had a single hiccup! Taking it to the woods in two days for real world testing but, I imagine everything will be great! Review: Reduced Amerage Rating Required - We have purchased three different DC controllers for this project. The first two were from China and rated at 30 amps. They both got very hot and failed at 10 amps. We subseuently purchased this controller, which was more sophisticated and had nice remote controls and a speed or percent power indicator. This one is rated at 40 amps, whereas our application required 12 amps, so we intended to run it at about 30% or rated output. At 12 amps, this one also got hot but didnot burn out. We reduced the running amperage to 10 amps and the device did not reach a failure temperature level. We will build this unit into our product but reduce the rating to maximum of 15 amps rather than the published 40 amps. The controls and indicator are very well done. ## Features - ♕【Technical Parameters】 Input supply voltage: DC 10V-55V; Rated current: 40A; Max current: 60A; Speed range: 0%-100% ; Apply to: DC Brush Motor - ♕【CW/CCW Function】The switch can provide clockwise and counter clockwise rotation choice. With this latching switch, you can control the rotation direction easily. - ♕【Excellent Heat Dissipation Performance】 The enclosure of the speed controller for motor is an aluminum enclosure. Aluminum shell is very strong to prevent damage, holes on its side and top which are helpful for heat dissipation. - ♕【Easy to Operate】The stepless motor controller has a simple potentiometer knob adjusts the motor speed from 0% ~ 100% smoothly. LED display screen shows the motor speed from 0% to 100% of the rated speed. - ♕【Application】 The DC motor driver can be used on brush motor speed regulation, light dimming regulation in the DC circuit. Note: The motor can not be used in electric vehicles. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B089273KVZ | | Best Sellers Rank | #38,834 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Electrical Motor Controls | | Brand | HARMNEE | | Brand Name | HARMNEE | | Color | Silver | | Customer Reviews | 4.2 out of 5 stars 456 Reviews | | Display Type | LED | | Item Dimensions L x W x H | 3.1"L x 4.5"W x 1.4"H | | Item Weight | 240 Grams | | Manufacturer | WellHome Innovation | | Material | Metal | | Material Type | Metal | | Model | Standard 10-55V/60A Max | | Part Number | Standard 10-55V/60A Max | | Product Dimensions | 3.1"L x 4.5"W x 1.4"H | | Smart Home Compatibility | Not Smart Home Compatible | | Unit Count | 1.0 Count | ## Product Details - **Brand:** HARMNEE - **Color:** Silver - **Item Weight:** 0.52 Pounds - **Material:** Metal - **Product Dimensions:** 3.1"L x 4.5"W x 1.4"H ## Images ![PWM DC Motor Speed Controller, DC 10-55V / Rated 40A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch - Image 1](https://m.media-amazon.com/images/I/71cG3dPGApL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: can this pulse 12v , would it be ble to pulse 12v injector for cleaning ?** A: The voltage of your injector is between our controller voltage range (10~55V). If your injector is with a DC brush motor and the rated current is below the 60A, HARMNEE pwm motor speed controller will fit for your injector. The rated current is equal to the rate of power divided by voltage 12V. **Q: Why is there a 3 way switch for this?** A: one is for turning off the motor and the other two are for forward and reverse. **Q: Can it be used with arduino to control motor speed and direction?** A: I can't imagine why not as long as the Arduino project meets the volt and amp capacities of the Controller. **Q: Lemon? Two right most terminals wired to 20V battery but the voltage across the two left most terminals always 20V no matter the % of pot adjustment.** A: unplug the pot and connect a meter to center leg and either side legs and check ohms clime as you turn the knob. Make sure all connections are correct. If pot works then controller is bad. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Impressive results, right out of the box! *by D***S on April 24, 2025* I was really impressed with this item! It came with connectors and a couple little extras. After about 10 mins of setup, not only did it look slick, but, it functions EXACTLY as described! Just what I needed for my highbanker pump! For anyone here doing the a similar project: - (x1) Harmnee Controller - (x1) Prospector's Dream Bac-Pac series highbanker. - (x1) 2,000 gph bilge pump - (x1) 12v 20ah Dakota Lithium battery - Misc. roll of 16ga wire. I've run it in the bath tub for over an hour, at all different speeds. Haven't had a single hiccup! Taking it to the woods in two days for real world testing but, I imagine everything will be great! ### ⭐⭐⭐⭐⭐ Reduced Amerage Rating Required *by E***G on July 20, 2025* We have purchased three different DC controllers for this project. The first two were from China and rated at 30 amps. They both got very hot and failed at 10 amps. We subseuently purchased this controller, which was more sophisticated and had nice remote controls and a speed or percent power indicator. This one is rated at 40 amps, whereas our application required 12 amps, so we intended to run it at about 30% or rated output. At 12 amps, this one also got hot but didnot burn out. We reduced the running amperage to 10 amps and the device did not reach a failure temperature level. We will build this unit into our product but reduce the rating to maximum of 15 amps rather than the published 40 amps. The controls and indicator are very well done. ### ⭐⭐⭐⭐⭐ Very useful controller if your rotating 360’ *by J***Y on October 28, 2025* Simple forward and reverse motor control. I found the rocker switch was not suitable for my needs so changed to two separate momentary push button switches. I didn’t use the ‘turns digital readout’ as it’s not got a ‘retained’ memory, it goes to zero if switched on or off. So I didn’t know where I was in rotation terms. ## Frequently Bought Together - PWM DC Motor Speed Controller, DC 10-55V / Rated 40A / Max 60A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch - Junction Box, Zulkit Project Box IP65 Waterproof Outdoor Box ABS Plastic Electrical Boxes Electronic Enclosure Black 7.9 x 4.7 x 2.95 inch (200 x 120 x 75mm) - Haoguo Steering Triangle Compatible with Newport NK-180S Brushless Kayak Motor, Stainless Steel Structure, Anti-Rust, Easy Installation --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/206202711-pwm-dc-motor-speed-controller-dc-10-55v-rated-40a](https://www.desertcart.pe/products/206202711-pwm-dc-motor-speed-controller-dc-10-55v-rated-40a) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-07-07*