How do you determine a fuse rating for a circuit.

The circuit is sized according to the load or code requirements. The wire is sized according to the circuit.

Can you be a bit more specific as to what you are asking?

How to define fuse rating of three phase induction motor

Looks like homework, don't you think?

Ya think?

This site must be linked somewhere where folks do online testing. We get WAY too many test questions here.
Why can't folks simply study to find the answers??