The LC1K12107U7 is a TeSys K contactor from Schneider Electric, a 3-pole device rated for control applications with a 230…240 V AC coil. Its headline rating is 12 A in AC-3 utilisation category at ≤440 V, which is the motor-switching current — the figure that governs real-world sizing for inductive loads like pumps, fans, and compressors. Also carries AC-1 (resistive) and AC-4 (inching/plugging) ratings, so it covers resistive heater banks and high-stress motor reversing duty within its thermal limits. Motor power capability spans 3 kW at 220…230 V AC up to 5.5 kW at 380…440 V AC, with 4 kW available at 480 V and 500…690 V AC — a wide voltage band that suits global panel designs. Rated operational current is 20 A, though the AC-3 motor rating is the one to spec against; the 12 A AC-3 figure is the binding constraint for inductive loads.
The TeSys K contactor series uses the LC1K prefix. Auxiliary blocks, coil suppressors, and mechanical interlocks are compatible across the range.
Snap-on mounting to DIN rail or screw-fixing via the base plate — standard for panel builders who need to populate a backplate quickly without loose hardware. Dimensions of 45 mm wide × 58 mm high × 57 mm deep keep it within the footprint of a typical 3-pole contactor in this current class; multiple units side-by-side on a 35 mm DIN rail fit standard enclosure widths.