The LX9FJ917 is a specific replacement coil for the TeSys F contactor range, designed for 48 V AC (40–400 Hz) or 48 V DC control circuits. It's a low-consumption coil — 23 VA holding at 68 °F, 500 VA inrush — which means the control transformer sizing is tighter than a standard coil; the inrush spike is brief but real. Opening time is 60 ms, closing 20 ms, so the contactor responds fast enough for most motor-start and isolation duties.
Key electrical specs at a glance
Control voltage is 48 V AC (40–400 Hz) or 48 V DC. The coil draws 500 VA inrush and 23 VA holding on AC; DC holding is lower. Average resistance is 4.03 Ω inrush and 43 Ω holding at 68 °F (20 °C). Heat dissipation runs 11.4 to 13.9 W, so panel thermal rise is a consideration if multiple coils are ganged. The coil has no built-in suppressor module — you'll need an external RC snubber or free-wheeling diode across the coil if driving from a PLC output or solid-state relay, otherwise the inductive kick can damage the driver.