The Schneider Electric LC1E120E5 is a 3-pole contactor from the Easy TeSys Control series, rated for motor switching in AC-3 and AC-3e duty up to 120 A at 440 V, with a 48 V AC 50 Hz coil. It also carries an AC-1 resistive load rating, so it handles both motor starting and general resistive loads in the same footprint. The part is now classified as obsolete by the manufacturer.
The AC-3e variant adds an extended electrical endurance category for more demanding cycling. The 48 V AC coil is specific: if your control circuit runs 48 VAC at 50 Hz, this is a direct fit; a 24 V or 110 V coil would require a different variant in the LC1E family. The TH treatment (pollution degree 3 per IEC 60068-2-30) means it withstands humid, mildly corrosive atmospheres — typical for industrial control panels in unheated warehouses or process areas.
These standards cover the electrical endurance, dielectric strength, and thermal performance required for industrial motor control panels in most global markets.