Good point Jon (Winnie),
Our motors as they are wound here come out to 6 terminals labelled A1-A2, B1-B2, C1-C2.
A1-A2 constitutes a single winding in a 3-Phase motor, as does B1-B2 and so forth.
You can configure a motor to work in Star or Delta by changing the links within the terminal box or leave the whole thing open with 6 wires fed from a Star-delta Starter.
All of the Star-Delta conversion happens within the Starter itself, with the 3 contactors, 1 Main, 1 Delta and a Star contactor.
There is also (or should be) a timer that changes the Starting Contactor from the Star start to the Delta run mode.
