TeSys F, contactor coil, LX4FF, 24 V DC. range: TeSys – product or component type: contactor coil – device short name: LX4FF – product compatibility: LC1F115, LC1F150 – average resistance: 1.12 Ohm inrush at 20 °C, 177 Ohm holding at 20 °C – inductance of closed circuit: 11 H – operating time: 30…40 ms closing, 30…50 ms opening.