The LC2K0901K7 is a TeSys K reversing contactor from Schneider Electric — a 3-pole unit preassembled with a reversing power busbar, rated AC-3 at 9 A up to 440 V, with one NC auxiliary contact and a 100 V AC coil.
Key ratings in context — what drives fit
The same contactor also carries an AC-1 rating for resistive loads and an AC-4 rating for inching/jogging duty, so it covers the full utilisation category range for a small reversing motor circuit. The 100 V AC coil is a specific control voltage — not the common 110/120 V or 230 V found in many panels. Verify your control transformer tap before specifying this as a drop-in replacement. The coil holds at 100 V nominal; drop-out voltage is typically around 60–70 % of rated (per IEC 60947-4-1), so a sagging 100 V bus may drop it out prematurely. IP20 finger protection (VDE 0106) means the contactor is safe for open-panel mounting where no washdown or dust ingress protection is required. The 57 mm depth fits standard DIN-rail enclosures, but the preassembled reversing busbar adds width beyond the 90 mm base — account for that in your panel layout. Above that altitude, the air density drop reduces dielectric withstand and cooling — the contactor may need to be derated or replaced with a higher-rated unit.
Mechanical robustness — what the shock/vibration specs tell you
The contactor is tested to IEC 60068-2-27 for shock and IEC 60068-2-6 for vibration. With the contacts closed, it withstands 10 Gn on the X axis and 15 Gn on Y and Z axes (11 ms half-sine). With contacts open, it withstands 6 Gn on X and 10 Gn on Y and Z. Vibration endurance is 4 Gn (closed) and 2 Gn (open) over 5–300 Hz. These numbers mean the contactor is suitable for panel mounting on machinery with moderate vibration — pumps, conveyors, compressors — but not for direct engine-mount or high-shock applications without additional isolation.