TeSys F, contactor coil, LX4FK, 220 V DC. range: TeSys – product or component type: contactor coil – device short name: LX4FK – product compatibility: LC1F500 – average resistance: 44 Ohm inrush at 20 °C, 8150 Ohm holding at 20 °C – inductance of closed circuit: 1080 H – operating time: 45…60 ms opening, 50…60 ms closing.