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MFA Motor Speed Regulation Unit

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Quoting product code: WC76H


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About this product


  • Motor speed controller unit
  • Allows you to vary output voltage from 0 to the input voltage
  • Operating voltage between 6V and 15V

Product overview

• Motor speed controller unit
• Allows you to vary output voltage from 0 to the input voltage
• Operating voltage between 6V and 15V
• Pulse width modulation for reduced power loss in the output
• 21cm input and output cables

How can I use this speed regulator?

The speed regulator comes with an input cable with insulated spade connector to attach to a battery or similar DC (non digital supply) and output cables to attach to your project. The controller can vary the speed between 0 to the input voltage adjustable using the supplied miniature slotted screwdriver. The speed regulator can run off a 6-15V power supply or battery and power devices up to 15V dependant on input. With its contained design this regulator is handy for moving between multiple projects. Power width modulation reduces power loss in the transfer, provides a proportional output control and assists with maintaining torque.


Product code 919D2
Product type Variable speed regulator
Supply voltage 6 V - 15 V
Output voltage 0 V – Input voltage
5A peak
Weight 30 g
Dimensions 34 mm x 27 mm x 18 mm

Would this controller be suitable for adjusting the speed of a 12 v 4.4amp ventilating fan

Asked by: Keith
Yes this should be fine to use.
Answered by: Billy
Date published: 2017-04-07

I have a watchmakers lathe which needs a speed regulator to control the motor rather than a foot pedal,will this do the job? Do you sell one with a stop switch included? 

Asked by: Gary
This service is for frequently asked questions and does not allow two way communication, In order for us to best assist you with your technical issue please contact us on the details below: 0333 400 9500 or email technical@maplin.co.uk
Answered by: Billy
Date published: 2017-03-03

Hi Can I connect 2 motors to one controller so that they can be controlled simultaneously and have full range of control, or do I need to use 1 controller per motor.

Asked by: Anonymous
Unfortunately we are unable to guarantee full compatibility for this item, as this is not the manner for which it was designed to be used.
Answered by: Dominic
Date published: 2016-12-01

Will this regulator rectify AC current or does it require D.C. current input?

Asked by: W__B
DC voltage only 6-15v
Answered by: Les
Date published: 2016-01-05

Can I fit this between the battery holder and the motor on a toy   This motor has single speed and need to slow down. 

Asked by: Jeff
As long as it is between 6V and 15V then yes this will be suitable.
Answered by: Russell
Date published: 2015-08-28

Can this item be used to slow a 3v rotisserie motor to say 1rpm?.

Asked by: chief
No, this starts at 6V.
Answered by: Russell
Date published: 2015-07-21

I have 12v DC motor from a Ford Kia interior heater. I use this as a blower to raise steam on a model loco. i wish to control the speed to control the rate at which steam is raised. Can you advise a suitable controller. the supply is up to about 16v 

Asked by: Bill
The one linked below would be a suitable option: http://www.maplin.co.uk/p/mfa-panel-mounted-speed-regulator-module-rn41u
Answered by: Russell
Date published: 2015-07-17

can this unit be used on a woodturning lathe
Asked by: r, worthington
Yes the product does support that.
Answered by: DH
Date published: 2015-07-17
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