I assume what you're calling a motor is really a stepper.
Blowing fuses aren't as straighforward to diagnose as some problems but there are some techniques that work. Does the fuse/breaker blow when the stepper is at the same position every time?

For more than that, see the reply I sent you in a private message.

Which stepper is it?
Does the breaker blow at a particular position of the stepper?
If you'd like to try a phone call, send me your phone # in a private message, with your country code. I've made international calls with WhatsApp.