The LX1FH0522 is a replacement contactor coil from the TeSys range, designed for LX1F contactors. It operates on 52 V AC at 40 to 400 Hz, drawing 8 W of heat dissipation. The coil has no built-in suppressor module, so you'll need to add external suppression (RC snubber or varistor) across the coil terminals if driving it from a PLC output or electronic controller — the lack of internal suppression means the coil's inductive kickback is unmanaged without it.
Control circuit voltage is 52 V AC, with a dropout threshold of 0.35 to 0.55 Uc (roughly 18 to 29 V) and a pickup range of 0.85 to 1.1 Uc (44 to 57 V) at 55 °C. That means the coil will reliably pull in above about 44 V and drop out below about 29 V — important if your control transformer sags under load or you're running a long cable run. Opening time is 100 to 170 ms, closing time 40 to 65 ms; the maximum operating rate is 2400 cycles per hour at 55 °C, which is fine for most motor starting and switching duty but not for high-speed cycling applications like rapid reversing.