What this coil is for
The Schneider Electric LX4FH080 is a replacement contactor coil in the TeSys range, designed for FH-series contactors. It is a DC wide-range coil rated at 80 V DC control voltage, meaning it operates within 0.85 to 1.1 Uc (68 to 88 V DC) and drops out between 0.15 and 0.2 Uc (12 to 16 V DC). The coil has no built-in suppressor module, so you will need to add external flyback diode or RC snubber protection across the coil terminals to protect the control circuit from inductive kickback.
Switching performance
Closing time is 40 to 50 ms; opening time is 40 to 65 ms. Average resistance is 8.82 ohms inrush and 1993 ohms holding at 20 °C. The coil is rated for ambient air temperatures from -5 to 55 °C. These figures matter for timing-dependent circuits like star-delta starters or reversing contactor interlocks where the opening delay window can affect mechanical overlap.
