The Schneider Electric LX4FL180 is a replacement contactor coil from the TeSys range, designed to fit FK-series contactors. It is a service part — the kind of component an MRO planner or panel builder orders when a contactor in the field loses its coil and the line needs to stay running. Rated for a 180 V DC control circuit with DC low-consumption technology, meaning it draws less steady-state power than a standard DC coil, which matters when the control transformer or power supply is already loaded with PLCs and relays.
The coil operates with an opening time of 40 to 50 ms and a closing time of 60 to 70 ms. That timing is consistent with standard TeSys contactor dynamics — fast enough for motor starting and general switching, but not a high-speed application. If your circuit relies on contactor opening within 20 ms for a safety function, this coil is not the right fit. Control circuit voltage limits: drop-out occurs at 0.2 to 0.35 Uc at 131 °F (55 °C), and the operational range is 0.85 to 1.1 Uc at the same temperature. Practically, this means the coil will reliably pick up above about 153 V DC and drop out below roughly 63 V DC at the rated ambient. The wide drop-out band is typical for DC coils — it ensures the contactor opens cleanly even with a sagging control supply. The coil comes without a built-in suppressor module. In a DC control circuit, that means you will need to add a free-wheeling diode or a varistor across the coil terminals if the driving output is a PLC transistor or a solid-state relay — otherwise the inductive kick can damage the driver. This is standard practice for DC contactor coils; the suppressor is omitted to let the panel builder choose the right suppression for their specific driver.
As a service part in the TeSys range, it is stocked by major industrial distributors and can be ordered in single-unit quantities. For a line-down situation, the active status means the lead time is predictable — no broker scramble required.