BHP = PFC
torque = how fast it gets there
any easier for you,
if you have a low bhp but a high torque you will hit the limit quicker,
the torque overcomes the resistance, and if you also have a very low restistance then you get there even faster, this is why racers change the gearing so much, to get the torque&bhp to match the achievable speeds they need,
and we use the same principle to select protective devices to allow necessary current through at acceptable speeds and still achieve protection, rating, type and pfc of MCBs.
more torque=less resistance
more bhp= higher PFC