The Schneider TeSys K LP2K1210LD is a 3-pole reversing contactor rated for AC-3 duty at 12 A up to 440 V, with a 200 V DC coil and one normally open auxiliary contact. It comes preassembled with the reversing power busbar — that means it's ready to drop into a panel for forward/reverse motor control without sourcing a separate mechanical interlock or bus kit. The 200 V DC coil is a specific voltage; verify your control supply matches before wiring.
The AC-3 rating of 12 A at 440 V governs motor switching — that's the current it can make and break across typical induction motor loads. AC-4 (inching/plugging) and AC-1 (resistive) are also listed, so the contactor can handle mixed duty cycles. The power circuit is rated up to 690 V AC 50/60 Hz, giving headroom for 480 V or 575 V systems as long as the motor current stays within the 12 A AC-3 limit.
Mechanical and environmental tolerance
The contactor handles 15 Gn shock on Z axis when closed, and 4 Gn vibration from 5 to 300 Hz — figures that matter if this goes into a machine with frequent start/stop jolts or a mobile application. Operating altitude is 2000 m without derating; above that you'll need to account for reduced air density on arc extinction.