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Schneider Electric LX4FF055 — Contactor & Starter Coils

Schneider TeSys LX4FF055 contactor coil, 55 V DC

MPNLX4FF055
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Schneider Electric TeSys LX4FF055 contactor coil, 55 V DC, DC low consumption, 30-40 ms closing / 30-50 ms opening, without built-in suppressor module.

Schneider Electric LX4FF055 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LX4FF055 — Identification
ParameterValue
Product typeContactor coil
Product rangeTeSys
Device short nameLX4FF
Coil technologyWithout built-in suppressor module
LX4FF055 — Electrical
ParameterValue
Control circuit voltage [Uc]55 V DC
Control circuit typeDC low consumption
Control circuit voltage limitsOperational 0.85...1.1 Uc 131 °F (55 °C)) Drop-out 0.15...0.2 Uc 131 °F (55 °C))
Coil resistance (avg.)5.63 Ohm inrush 68 °F (20 °C) 967.3 Ohm holding 68 °F (20 °C)
LX4FF055 — Performance & Durability
ParameterValue
Operating time30...40 ms closing 30...50 ms opening
LX4FF055 — Environmental
ParameterValue
Operating temperature23...131 °F (-5...55 °C)

Product details

The Schneider Electric TeSys LX4FF055 is a DC low-consumption contactor coil rated at 55 V DC control voltage, designed to replace or populate the coil on TeSys FF-series contactors. It operates within 0.85 to 1.1 Uc (46.75 to 60.5 V DC) and drops out between 0.15 and 0.2 Uc (8.25 to 11 V DC) at 131 °F (55 °C). Closing time is 30 to 40 ms, opening 30 to 50 ms — fast enough for standard motor starting and general switching in control panels.

Coil resistance and suppressor note

Inrush resistance is 5.63 Ohm at 68 °F (20 °C), dropping to 967.3 Ohm holding at the same temperature. The coil ships without a built-in suppressor module — plan for an external flyback diode or RC snubber across the coil terminals if driving from a PLC or solid-state output, otherwise the inductive kick can damage the driver. Ambient operating range is -5 to 55 °C (23 to 131 °F).

Frequently asked questions

What is the closest pin-compatible alternative to LX4FF055 in this component family?

Within the TeSys FF series, the closest alternative would be a coil with the same mechanical footprint but a different control voltage — for example, a 48 V DC or 110 V DC variant. Pin compatibility is determined by the FF coil platform, but the control voltage must match the contactor base and the control circuit. No direct pin-compatible substitute with identical voltage is listed; the LX4FF055 is the specific 55 V DC offering.

What compliance documentation does Schneider provide for LX4FF055?

The evidence does not list specific compliance declarations (RoHS, REACH, UL, IEC) for this order code. Standard Schneider TeSys components typically carry CE, UL, and CSA marks, but verify the specific certificate for your region against the nameplate or Schneider's documentation portal.

MPN
LX4FF055