a compact terminal unit for an electric motor capable of switching over windings with ease and improving automation of assembling and inspection process of the electric motor . a terminal base is fixed at a position of a through hole formed on a housing of the electric motor . leads of the windings of a rotor are connected with cylindrical presser portions of lead connectors by caulking . a conducting portions of the lead connectors are inserted into mounting portions of the terminal base . the power cables are connected with conducting portions with screws engaged with the conducting portions so that the power cables are electrically connected with leads of the windings . since the leads are connected to the lead connectors with their orientations vertically under the power cable connection terminals not to be present in a space in a terminal box , an ample space for attachment of the power cables to the power cable connection terminals is secured . the switchover of windings from a delta connection to star connection and vice versa can be easily performed . since positions and orientation of the leads are fixed at mounting portions of the terminal base , the inspection of the windings can be easily performed .