The LX4D7XD is a TeSys Deca contactor coil, a 600 V DC standard coil designed to drive an 80 A contactor in the TeSys range. It uses DC standard control circuit technology without a built-in suppressor module, so you'll need to add external flyback suppression if the driving circuit doesn't already provide it. The coil draws 22 W inrush and hold-in power at 20 °C, with an average resistance of 17425 Ohm.
The control circuit voltage limits are drop-out at 0.1...0.3 Uc and operational at 0.85...1.1 Uc at temperatures below 55 °C. The time constant of 75 ms is the L/R ratio of the coil; this matters for sizing the suppression network if you're driving it from a PLC output or solid-state relay. Ambient air temperature range for operation is -5 to 60 °C, so it's fine inside a standard ventilated enclosure but not for direct outdoor exposure without additional climate control.
For BOM lines that require this exact coil, sourcing goes through surplus or broker channels. If you're in the middle of a panel build or a repair, the 600 V DC coil is specific enough that a parametric substitute isn't straightforward — the replacement path is to source the original LX4D7XD or re-engineer the control circuit for a different coil voltage.