Hi,
Multisim does support some electromechanical parts, but whether Multisim will achieve your goals depends on what you are trying to do.You can find the electromechanical parts in the Electro_mechanical group, where you will find various switches, relays, motors, etc. I don't think there are any sample files that use these components.
As for the XML import, the short answer is no. XML is used for a variety of different types of information, from databases to Word Documents and images, all of which Multisim will not be able to import. Is there a particular software you are trying to import from?
