The LC1E3810U5 is a 3-pole EasyPact TVS contactor from the Easy TeSys Control range, rated 38 A in AC-3 duty at ≤440 V with a 240 V AC coil. That AC-3 rating means it's sized for squirrel-cage motor switching — the 38 A figure governs the full-voltage starting and stopping of motors up to that current. It also carries AC-3e and AC-1 utilisation categories, so it handles the higher electrical endurance of AC-3e for IEC 60947-4-1 applications and resistive loads up to its AC-1 rating. The 56 mm width and 84 mm height fit standard panel spacing — no oddball footprint that forces a layout change.
That 1.5 ms window prevents a momentary short-circuit across the power circuit during pole transition — if your control scheme relies on mechanical interlocking, this part has the built-in timing to back it up. Permissible ambient temperature spans -20 to 70 °C at the coil, with storage down to -60 °C and operation at -5 to 55 °C. Fire resistance rated at 850 °C conforming to IEC 60695-2-1, and the part complies with EN/IEC 60947-1, -4-1, -5-1 plus GB/T equivalents and EN/IEC 60335-1 Clause 30.2 and -2-40 Annex JJ. That last pair matters if the contactor ends up in an appliance or HVAC circuit — the glow-wire test at 850 °C is a hard requirement for those standards.