The LC1E1801B6 is a 3-pole contactor from Schneider Electric's Easy TeSys Control range, rated 18 A in AC-3/AC-3e duty at ≤440 V. The coil is 24 V AC, 60 Hz only, and it carries one normally closed auxiliary contact. This part is now obsolete per the manufacturer.
AC-3e is a more recent sub-category for high-efficiency motors; the contactor meets both. AC-1 (resistive) rating is higher but not the limiting spec for motor duty. The 24 V AC coil draws from a control transformer, not a DC supply — if your panel runs 24 VDC, this coil won't hold in. Mounts on DIN rail or plate. IP2X finger protection is typical for enclosed contactors — fine inside a panel, not for open mounting. Complies with EN/IEC 60947-4-1 (contactor standard), EN/IEC 60947-5-1 (auxiliary contact standard), and GB/T equivalents.
Sourcing reality — obsolete part
Schneider lists this contactor as obsolete. We can quote against an RFQ — the supply posture is quoted-to-order, not off-the-shelf. Confirm the coil voltage (24 V AC 60 Hz) and the auxiliary contact configuration (1 NC) before substituting; a different coil voltage or contact arrangement won't drop in without rewiring.