What are the wire sizes that a BAB breaker will accept?

The wire sizing and corresponding Torque values are embossed on the side of the breaker itself as following:

14-10 AWG          20 in-lbs

        8 AWG         25 in-lbs

     6-4 AWG         27 in-lbs

  3-1/0 AWG         45 in-lbs

Thus, the range for wires is 14 to 1/0.