The LX4FH020 is a TeSys F contactor coil from the TeSys range, designed as a replacement or spare coil for TeSys F contactors. Closing time runs 40 to 50 ms; opening takes 40 to 65 ms. The coil draws 750 W inrush at 20 °C, then settles to 5 W holding power.
This coil is marked obsolete by the manufacturer. No official successor order code has been assigned.
The 24 V DC wide-range coil has no built-in suppressor module, so you need to add a free-wheeling diode or varistor across the coil terminals externally — otherwise the inductive kick from the 17.3 H closed-circuit inductance can damage PLC outputs or upstream contacts. The coil is a single-unit package, so order one per contactor replacement.