How do you wire up an LE1D12U7S48.



Remove the signal supply wire from L3 and connect a supply wire, from an external source, to the upstream "line side" of the electrical contact block on the back of the "start" pushbutton.
Then the downstream "load side" of the same "start" pushbutton electrical contact will normally be connected to terminal number "A1" on the coil of the contactor.
Also, because of the geographical layout of the LE1D12U7S48 starter unit, then the normally closed (N/C) electrical contact inside the thermal overload unit will be connected between the neutral and terminal number "A2"
on the same contactor.