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1
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Please don't turn on without load.
Note:
US-52 apply for Adjustable speed AC induction motor.
6-250W without filter capacitor
Specifications
Product Name : Motor Speed Controller
Model : US-52
Material : PVC
Connector Type : 6 Pins
Rated Value : AC 220V, 50HZ
Power : 400W
Cable Length : 60cm
Green LED indicator, 6 terminals, on/ off switch for controlling, the knob switch for adjust the speed.Used for Machine Tools, Textile Machinery, Conveying Machine, Printing Mechanism,Food Machinery, Vending Machine, Packing Machinery, Gumming Machine, etc. It is not suitable for US users.
Method of use
1. Turn off the power, connect it according to the wiring diagram and make sure the connection is correct.
2. Fix the controller well and set the speed to the lowest "0", so as to avoid sudden large current and permanent damage when starting the power supply;
3. Then turn on the power and adjust the speed knob to the desired position. Please turn off the power when not needed;
4. The governor is connected to the motor. If the torque or speed is found to be inconsistent with the requirements, please adjust the fine-tuning potentiometer on the side of the product
5. To change the running direction of the motor, simply replace the jumper lines of "CCW" and "CW" on the back of the controller.
6. Select COM and CW short connection, then the motor will rotate clockwise.
7. Select COM and CCW short connection, then the motor do counterclockwise rotation.
(when changing direction, do not change the direction until the motor stops running completely.)
Wiring method
Black wire is the motor main wire, red and white are the capacitor auxiliary wires, and 2 blue wires are the speed control feedback wires, the green wire is the ground wire.
Package includes
1 x Speed Controller
















Customer Reviews
75 ratings
poor performance (5)
received as expected (3)
matches description (2)
fast delivery (2)
satisfactory (1)
recommended (1)
Customer photos (6)
Buyer from Nigeria
September 10, 2026
no seal as described it was it rotates only forward no backward
Buyer from Sweden
May 21, 2026
I returned it because the engine speed doesn't hold steady. I do not recommend buying. Shame on the manufacturer!
Buyer from Spain
May 16, 2026
It arrived perfectly, I haven't tried it yet.
Buyer from Ukraine
May 12, 2026
I used it to connect the motor from the washing machine. After connecting, it turned out that it was only rotating the motor by about 10-15 percent. The description states that there is a hole on the side for adjusting sensitivity, but in reality, there isn't one. I also checked inside on the circuit board, and there isn't one there either. Moreover, the heatsink on the transistor isn't just small; it's not there at all.
Buyer from Ukraine
May 4, 2026
The cooling radiator is missing. Such a device won't work for long; it will burn out. I'll have to install the radiator myself. The seller shipped the order quickly and the entire delivery process was trackable. The store is good.
i***s
April 18, 2026
It never worked. It didn't respond to my messages.
US-52 400W AC 220V 50/60Hz AC Speed Controller Forword Backword AC Motor Regulator Control
Quantity:
1
Availability:
Not Available






