The LX9FF055 is a specific replacement coil for TeSys F series contactors, wound for 55 V AC control circuits at 40-400 Hz. It's the low-consumption variant, meaning the hold-in power sits at 6.6-8.1 VA rather than the standard coil's draw — relevant if your control transformer is already loaded with PLCs and pilot lights. Opening time is 130 ms, closing 35 ms. Maximum operating rate is 2400 cycles per hour at 55 °C. Mechanical durability is 10 million cycles.
Coil Electrical Characteristics
The coil draws 690-855 VA inrush at 68 °F, dropping to 6.6-8.1 VA holding. Average resistance is 3.97 Ω inrush and 100.2 Ω holding at 20 °C. Control voltage limits: pick-up at 0.85-1.1 Uc, drop-out at 0.35-0.55 Uc at 55 °C. No built-in suppressor module.