You pretty much need to match your controller to the motor, if you use an AC motor then you need a controller that is designed for that motor, if you use a permanent magnet motor then you have many more options for controllers but you still need to make sure that it's compatible, also make sure that your controller amperage is the continues duty, not the 5 second rating and unless you want a controller with a short life then it should be over sized by maybe 10-20% if not more, because you don't want to be running your electronics at their peek all the time.
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