The Schneider Electric LX4FL100 is a replacement contactor coil from the TeSys range, designed for FK-series contactors. It operates on a 100 V DC control circuit with low-consumption DC coil technology, meaning it draws minimal holding current once the contactor is sealed — a consideration for control transformers or battery-backed supplies. Opening time is 40 to 50 ms; closing time is 60 to 70 ms. These timing windows matter for sequencing interlocks or coordinating with other contactors in a motor starter — the closing delay is longer than the opening, so a fast-break auxiliary contact on the same contactor may need to be wired to drop out before the coil is re-energized. The coil ships without a built-in suppressor module. For DC control circuits, an external flyback diode or RC snubber across the coil terminals is standard practice to protect the PLC output or relay contact driving it. Drop-out voltage is 0.2 to 0.35 Uc at 131 °F (55 °C); operational range is 0.85 to 1.1 Uc at the same temperature.
Schneider Electric LX4FL100 TeSys contactor coil, 100 V DC,
Schneider Electric TeSys LX4FL100, contactor coil, FK, 100 V DC, obsolete.
Specifications
| Parameter | Value |
|---|---|
| Product type | Contactor coil |
| Product range | TeSys |
| Device short name | LX4FL |
| Coil technology | Without built-in suppressor module |
| Parameter | Value |
|---|---|
| Control circuit voltage [Uc] | 100 V DC |
| Control circuit type | DC low consumption |
| Control circuit voltage limits | Drop-out 0.2...0.35 Uc 131 °F (55 °C)) Operational 0.85...1.1 Uc 131 °F (55 °C)) |
| Parameter | Value |
|---|---|
| Operating time | 40...50 ms opening 60...70 ms closing |
| Parameter | Value |
|---|---|
| Operating temperature | 23...131 °F (-5...55 °C) |
Product details
Frequently asked questions
What is the closest replacement for the LX4FL100?
There is no official successor order code listed. Any replacement would need to match the 100 V DC coil voltage, the FK contactor mounting interface, and the operating time profile. A parametric cross-reference is required — the TeSys range includes other coil voltages, but no direct pin-compatible drop-in is documented.
What range does the LX4FL100 belong to?
It is part of the Schneider Electric TeSys range, which covers contactors, overload relays, and accessories for motor control and power switching.
What compliance documentation is available for the LX4FL100?
The evidence does not list specific compliance documents (RoHS, REACH, UL, IEC) for this order code. As an obsolete part, original documentation may be limited; the datasheet for the TeSys FK contactor series would cover the coil's electrical ratings and mounting.