The LX9FJ915 is a specific contactor coil from the TeSys F range, designed as a replacement or spare coil for TeSys F contactors. It is not a complete contactor — it is the magnetic coil assembly that pulls the contactor in. The control circuit accepts a dual-rated supply: 32 to 34 V DC or 36 V AC at 40 to 400 Hz. That means one coil covers both a 24 V DC nominal system (with headroom) and a 36 V AC control transformer — handy if your panel has mixed control voltages. Opening time is 60 ms, closing time is 20 ms. For a contactor coil those are standard figures — fast enough for motor starting, not a high-speed switching coil for something like a DC injection brake. This coil comes without a built-in suppressor module. If your circuit needs surge suppression (and most do with inductive loads), you will add a separate RC snubber or varistor across the coil terminals. That is a common practice in panel building — just factor it into the BOM.
Because it is a specific coil (not a universal replacement), verify that your existing TeSys F contactor frame matches this coil's voltage range before committing the BOM line.
Heat dissipation runs 11.4 to 13.9 W depending on the control voltage and duty cycle. That is not trivial — if you are packing multiple TeSys F contactors into a small enclosure, factor that heat into your thermal calculation. The coil itself is rated for ambient air temperatures from -5 to 55 °C. Inrush power is 500 VA at 20 °C, dropping to a hold-in consumption of 23 VA. That inrush matters for transformer sizing — a control transformer feeding several of these coils needs to handle the simultaneous pick-up surge without voltage sag. For a contactor coil that is a solid service life — well above what most motor-starting applications will ever demand.