I am retrofitting a mill and the old steppers just aren't working well on all three axis so I am replacing them and the drivers as well. I am planning on keeping the power supply, but I want to make sure I don't get to high Amperage steppers.

The power supply is a 48volt toroidal power supply. It has wires running to each stepper and each of those three circuits has a 2 Amp Fuse on it. Does that mean I can use the 2/3 rule and use 3 Amps steppers? Or am I limited to 2 Amp steppers, because of the fuses?