The LX9FF100 is a specific contactor coil from the TeSys F range, designed to actuate the main poles of an F-frame contactor. It is a replacement or spare coil, not a complete contactor — the buyer is sourcing the electromagnet that pulls the contactor in. Rated for 100 V AC control supply at 40-400 Hz, this is a low-consumption coil: inrush power sits at 690-855 VA, dropping to 6.6-8.1 VA holding. The coil resistance measures 11.61 Ω inrush and 450.5 Ω holding at 20 °C. Heat dissipation runs 5.9-7.2 W. Operating time is 130 ms opening, 35 ms closing. The coil has no built-in suppressor module — if your circuit needs flyback suppression, add an external RC snubber or varistor across the coil terminals.
The coil mounts onto the contactor's magnet frame — it is not a standalone DIN-rail component. The control circuit is AC 40-400 Hz low consumption, so verify your control transformer supplies clean 100 V AC within the operational limits (0.85-1.1 Uc at 55 °C). Drop-out occurs between 0.2-0.55 Uc, meaning the contactor will release if the control voltage sags below roughly 20-55 V AC. The coil dissipates up to 7.2 W, so in a densely packed panel ensure adequate airflow around the contactor to avoid heat buildup that could shorten coil life.