just an fyi: protection circuits for motors are usually not a replaceable fuse but more of a thermistor type of breaker. when the coils of the motor gets too hot, the breaker "pops" until it cools off.
otherwise, you'd end up burning up the coils in the motor.
my mom's brand new knife sharpener/can opener (circa 1975) looked like it would do a great job on my hockey skates if i took the cover off the sharpener.
knife sharpeners are supposed to be momenatry. my skates took a few minutes, then poof! i let the smoke out of the coils.
mom wasn't happy, but i did end up with a career repairing electronics, lol.