Coil voltage and what it means for the panel
The LX1D4U7: This is the voltage that must be present across the coil terminals A1-A2 to pull the contactor in; a 24 V DC control transformer won't fire it.
Obsolete — sourcing through independent channels
Schneider Electric has marked the LX1D4U7 as obsolete. For a line-down situation or a BOM that still calls this order code, the part is sourced through independent surplus and broker channels — quantities are confirmed at quote time, not held in stocking inventory.
TeSys range context
This coil belongs to the TeSys range, Schneider's modular contactor and motor-starter family. The LX1D4 designation indicates the coil form factor that snaps onto the contactor base — it is not a standalone contactor but the electromagnetic actuator that drives the main poles.