Food-waste disposers include a small manual reset button to restart the motor if it overheats and goes off-line due to prolonged use or if something falling into the unit and it jams. This manual reset provides the ___ protection required by Code for this type of appliance

"overload protection"

Explanation:

"Food waste disposers" are machines that are used in order to shred the food wastes into bits of pieces. This allows the water pipes to be less clogged.

The "overload protection" is an essential protection required by the "Code Rules" for such type of appliance. This ensures  that the appliance will remain integral by being protected from burning if, in case, it overheats. This also includes not only the food-waster disposers but also the "dishwashers."

the answer is a wheel