I suppose the short answer is yes.You can transform any voltage to any other and you don't have the complication of different frequencies. Stepping up from 480V to 575V isn't a problem. Whether you can find a standard off the shelf unit may be another matter. But, even if you can't, there are transformer manufacturers who will quote one for you.
Originally Posted by Youth444
If the heater is self contained it is possible/probable that the 120V controls are powered by a transformer within the unit.
Si hoc legere scis nimium eruditionis habes.