Why do you ask? Are you 240/230v in feeding it? Given your info... can't tell where you are from. Overall, if in the U.S., no if you want to dim it on 120v dimmers, getting a 240v S-4
fixture isn't what would be best for you.
That said.. most S-4 fixtures shoudl be pre-set up for what ever
voltage and type of lamp you should want to put in it. The
fixture itself don't care what lamp is in it, only a question about the lamp you install. Given this concept of universal fixtures and holes for
roll pins instaled into the
base to outfit any
voltage or type of lamp... the Euro and US versions of the
fixture should be the same. Are Euro verion's cheaper than those domestically available given shipping back to the U.S.?
Thinking a moot
point given both fixtures are the same
fixture all dependant on lamp to the best of my knowledge. Same
fixture.