The Schneider LA4EM250FF is an electronic control module in the TeSys F range, designed specifically to drive the LXEFF250 coil on TeSys F contactors rated 115 A / 150 A AC-3. It accepts a wide control voltage — 100...250 V AC 50/60 Hz or 100...380 V DC — and includes built-in bidirectional peak limiting on the coil drive, which suppresses voltage spikes without needing an external varistor or RC snubber. The module's input is compatible with PLC 24 V DC outputs conforming to IEC 61131-2 Type 2, with an off-state threshold of 0...5 V and on-state from 11...30 V. This means a standard 24 V PLC output card can switch the contactor directly through this module, simplifying the control wiring.
Sourcing reality — obsolete part
This part is marked obsolete by the manufacturer. There is no official direct replacement order code listed in the lifecycle record. The module's heat dissipation of 2.2...5.5 W and inrush of 270...320 W (at 20 °C) are still relevant for panel thermal calculations if you're fitting an NOS unit into an existing design. The control voltage limits are wide: operational range is 85...275 V AC (50/60 Hz) and 85...418 V DC at 55 °C, with dropout at 60 V AC or 45 V DC. That gives decent ride-through on a sagging DC bus, but the hold-in consumption is modest — 2.5...4 W DC or 4.5...7 VA AC.
Integration notes
Tighten to 0.6 N·m. The module is rated for 10 million mechanical cycles and can operate at up to 2400 cycles per hour at 55 °C — figures that matter if this is going into a high-speed pick-and-place or packaging line.