PWM control of large cooling fan (30A+)

Other Hardware Motors, Mechanics, Power and CNC
1

I am seeking PWM control of large automotive cooling fans, like SPAL fans that that 30A each.

What would be a suitable control switch? Is there a MOSFET or power transistor big enough for this purpose that I can control with the Arduino?

Each 12V fan is rated at 14.5A continuous and no peak is given. But I like to know the answer for up to 30A if possible.

Thanks!
Dave

2

The starting current is typically five to ten times the continuous current, and the driver must be able to handle that. So plan on at least 100 A if you don't have a better guess.

You might be able to use an R/C ESC (electronic speed control), or an electric scooter motor controller.