The LX1FH0202 is a TeSys F contactor coil — the replaceable solenoid that pulls in the main contactor armature. It's a 20 V AC coil rated for 40-400 Hz supply, meaning it works on standard 50/60 Hz control transformers as well as higher-frequency circuits up to 400 Hz (common in aerospace or genset-derived supplies). Opening time runs 100-170 ms, closing 40-65 ms. That's a deliberate slow-open characteristic — helps manage arc extinction on the main contacts. The coil draws 650 VA inrush (cos φ 0.9) and settles to 10 VA holding (cos φ 0.3). Heat dissipation is 8 W across the frequency range. No built-in suppressor module, so you'll need an external RC snubber or varistor across the coil if driving it from a PLC output or solid-state relay. Coil resistance is 0.8 Ω inrush, 20 Ω holding at 20 °C.
That's a solid baseline for general-purpose switching; if you're cycling faster or at higher ambient, the thermal derating curve applies (not shown here, but standard for the TeSys F family).
What to watch when specifying
Drop-out threshold is 0.35-0.55 Uc (7-11 V AC) at 55 °C; operational pickup is 0.85-1.1 Uc (17-22 V AC). If your control transformer sags under inrush from other loads, ensure the voltage stays above 17 V during the pickup transient or the coil may chatter. That's typical for panel-mount contactor coils — fine inside a ventilated enclosure, but not for direct outdoor exposure or hot-aisle environments without derating.