Breakers should be sized to wiring, not the appliance.
To answer the question use the correct size breaker for the size wiring you need.
You would have better luck posting this in the electrical section.
50amp should work for any electric stove. Many could get by with less. Look at the owner's manual. To see what it needs.
Most people reccomend only using 80% of the circuit's capacity.
I agree. Check the back of the appliance where the model number is written. The number of amp needed is also indicated there. Post this on the electrical section to get clearer explanation from experts over there.