The LC2K16107U72 is a TeSys K reversing contactor from Schneider Electric — a 3-pole unit rated AC-3 at 16 A up to 440 V, with a 230-240 V AC coil and one normally open auxiliary contact. This is a control-class contactor for motor reversing applications — think conveyors, hoists, or any load where you need forward/reverse switching. The AC-3 rating covers starting and stopping squirrel-cage motors; the AC-4 rating handles inching and plugging duty, so it's suited for frequent reversals under load.
The 16 A AC-3 rating at ≤440 V is the number that governs motor sizing — it tells you the contactor can handle the locked-rotor current of a motor up to roughly 7.5 kW at 400 V three-phase. IP20 finger-safe protection means it's intended for enclosure mounting — no exposed live parts when installed in a cabinet with the door closed. Mechanical robustness is specified: the contactor withstands 10 Gn shocks on Y and Z axes (15 Gn on X) with the contactor closed, and 4 Gn vibration at 5-300 Hz. That's enough for most machine-mounted applications, though a high-vibration press or crusher might need additional damping.
The TeSys K family is widely used, so cross-referencing to a similar rating in the same family is possible if you ever need a different coil voltage or auxiliary configuration.