Depending on if one is talking about a specific part, or if one is talking about the mechanism that is a collection of parts, and where it leads to, the target term in English can be Railroad switch, Turnout, or Point.
This is valid for rail workers in the Midwest of the U.S., in spoken conversation.

If the source term is referring to a mechanism that moves a train from one set of rails to another, railroad switch is the correct term.