The LC2K1210UE7 is a TeSys K reversing contactor from Schneider Electric — a 3-pole unit rated AC-3 at 12 A up to 440 V, with a 277 V AC coil and one normally open auxiliary contact. It comes preassembled with the reversing power busbar, so it's ready to drop into a panel for forward/reverse motor control of a small load like a conveyor or pump. The AC-1 rating covers resistive loads, and AC-4 covers plugging/inching duty, but for a standard reversing starter the AC-3 figure governs the fit.
If you need a drop-in replacement, you'll want to check the TeSys K family for a current reversing contactor with the same coil voltage and pole configuration — the form factor and busbar arrangement are consistent across the series.