The Schneider Electric LC2K16107J7 is a TeSys K reversing contactor — three poles, rated AC-3 at ≤440 V for 16 A motor switching, with a 12 V AC coil and one normally open auxiliary contact. It comes preassembled with the reversing power busbar, so you don't have to wire the mechanical interlock or main power crossover yourself; that's already done at the factory. The AC-3 rating is what matters here: it's built for starting and stopping squirrel-cage motors on the line, not just resistive loads. At 16 A on a 400 V three-phase supply, that covers motors up to roughly 7.5 kW (10 HP) — the kind you'd find on small conveyors, pumps, or fans in a control panel. The 12 V AC coil is an oddball in most modern panels that run 24 VDC or 120 VAC, so make sure your control transformer taps are set for it.
At 90 mm wide by 58 mm deep by 57 mm tall, it's a compact block that fits in a crowded enclosure without hogging space. IP20 means it's finger-safe but not sealed; keep it inside a cabinet away from washdown or dust. Preassembled with the reversing busbar means you land your line and load wires directly on the power terminals — no extra bridging or interlock wiring. The 1 NO auxiliary can be used for a run-status signal back to the PLC or to seal in the coil circuit. Rated for vibration up to 4 Gn closed and shock up to 15 Gn on Y and Z axes, so it won't drop out on a shaky conveyor drive.