The GS Series Soft Starters require bypass contactors, whereas for the GW Series Soft Starters this is optional. Please see wiring as indicated below (Use Bypass Contactor with ~250VAC Coil):
*If there is no Neutral Line available, it is possible (but not ideal), to connect Terminal 1 to another Line Phase and use a Bypass Contactor with a ~400V Coil.
