The LC1E3810R5 is a 3-pole contactor from Schneider Electric's Easy TeSys Control range, rated for 38 A in AC-3 duty at up to 440 V. It carries a 440 V AC coil at 50 Hz and includes one normally-open auxiliary contact. The part is now listed as obsolete by the manufacturer.
The AC-3 utilisation category means this contactor is designed for starting and stopping squirrel-cage motors — the 38 A rating covers motor loads up to roughly 18.5 kW at 400 V three-phase. The AC-3e suffix indicates compliance with the energy-efficiency test profile in IEC 60947-4-1. It also carries an AC-1 rating for resistive loads, though the ledger doesn't state that current value. The 440 V AC coil draws from a control transformer or line voltage; verify your control circuit matches 440 V at 50 Hz.
This part is officially obsolete per Schneider Electric's lifecycle status. There is no direct successor order code listed in the available records. If you're filling a BOM for a new design, look at the current TeSys Deca or TeSys GV series for a form-fit-function alternative; the Easy TeSys Control line is no longer in production.
Certified to EN/IEC 60947-1, 60947-4-1, and 60947-5-1, plus the Chinese GB/T equivalents.