Nema 23 voltage

Sorry but I have been up for several hours and just a little foggy in the head. What is the voltage rating on the nema 23 stepper? Thanks in advance.

Inventables NEMA 23s are : Voltage is 3.2 volts current is 2.8 amps/phase.

Is that what you are trying to get, or did you mean the Reference voltage on the driver chip?

Yes that is it thank you!!