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Heavy Duty PWM DC Motor Speed Controller, 50 Amp
Item Details
Heavy Duty PWM DC Motor Speed Controller, 50 Amp
Item Name:
Heavy Duty PWM DC Motor Speed Controller, 50 Amp
Item #:
$73.99 (6 to 9 units)
$72.22 (10 to 15 units)
$70.99 (16 to 49 pcs)
$68.99 (50 to 99 Units)
$67.99 (100 and more (18-27 days for delivery))

Product Image Gallery:



The motor speed controller has a potentiometer that controls the pulse width modulation output and has a max current load of 50 Amps. This circuit allows you to obtain low operational speeds for DC motors without sacrificing torque. Popular uses for this product are as a motor controller, hydrogen electrolysis, DC light dimmers, LED lighting dimmers, and heating control.



  • LM324 Op-amp
  • 6 heavy duty IRF1404 MOSFETs with heat sinks (2.25” x 1.38” x 0.75”)
  • 12 large spade connectors (3 for each input and output)
  • LED power on indicator



  • MX033-66 Frequency Adjuster kit to change the operational frequency.
  • When operating at high amperage, a cooling fan is recommended to prevent overheating (see CF-268)



Product Specifications 

Power supply

8-30 VDC (jumper provided)

Load voltage

8-30 VDC (50 Amps max.)


Pulse Width Modulation

PCB dimensions

2.6” x 4.5” (approx. 70mm x 115mm)

Motor speed range

0-100% adjustable

Operational frequency

100 Hz OR 400-3,000 Hz adjustable



Bakatronics LLC makes no claims or warranty as to the fitness or design of this product for the use in generating hydrogen, HHO gas or other applications. The purchaser is solely responsible for the design and application and assumes all risks. Bakatronics LLC shall not be liable for any damages to equipment or for any bodily harm. Our maximum liability is strictly limited to the purchase price of the MXA068 at the time of original sale. Bakatronics LLC also shall not be responsible for units damaged by improper hook up or overloading! It is the purchaser's responsibility to properly protect the unit from overloads. If Bakatronics LLC inspection determines a unit to be defective, Bakatronics LLC will repair, repair or refund the purchase price at our option. Bakatronics LLC reserve the right to refuse to sell units to anyone that in Bakatronics LLC opinion, is not using the unit properly. Final warranty lies with original manufacturer of the MXA068 module.

Item Options
Knob for 1/4" shaft Pot (Add $3.38)
Crimp Terminal for #10-12 Wire (Add $3.00)
Crimp Terminal for #10-12 Wire, Round (Add $3.00)
60mm (2.3") 12 Volt DC Cooling Fan (Add $15.98)
Metal Fan Guard for 60mm cooling fan (Add $3.98)
Item Price
Your Price:
Pulse Width Modulation Control, Uses: Motor Control, DC Dimmer, Electrolysis, Heating control. 50 Amps Heavy Duty @ 12 volts DC. Fully Assembled & Tested
Please Click "More Info" for additional information and current availablity

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