The Telemecanique LX1D09 is a replacement contactor coil for the LX1 D series, carrying a control circuit voltage of 110-240 V AC and rated for 50-60 Hz operation. It is the energizing element that pulls in the contactor armature, so matching the coil voltage to the control transformer or PLC output is the only fit decision — this one covers the common 120/240 VAC control bus without a tap change.
This coil snaps onto the contactor's magnetic core assembly — no wiring harness change needed if you're swapping out a failed coil on an existing LX1 D contactor.