Unemployment is a maybe. The employer is not required to tell you why you are suspended, but they will have to tell the UI commission if they want to contest unemployment.
It certainly can't hurt to talk to your union rep but there are far too many unknown variables to say what, if any, help he or she can be.
Two things I am tired of typing: 1.) A wrongful termination does not mean that you were fired for something you didn't do; it means that you were fired for a reason prohibited by law. 2.) The above answer, whatever it is, assumes that no legally binding contract or CBA expressly says otherwise. If it does, the terms of the contract apply.