Your supply is 120v / 240v for NA, yes, a lot of times this is possible, what is up stream of the Transformed, there would normally be a Breaker or Fuses so a direct connect would not be a normal thing to do
One main thing you will have to know how many amps it was for 220v/240v and your 120v supply would have to be more than double that, to run everything off 120v