The LC1K0601Q72 is a TeSys K three-pole contactor from Schneider Electric, rated for control applications in AC-3 and AC-4 utilisation categories. It switches motor loads up to 1.5 kW at 220–230 V AC, 2.2 kW at 380–415 V AC, and 3 kW at 440 V through 690 V AC, 50/60 Hz. The coil is 380–400 V AC with a built-in bidirectional peak-limiting diode suppressor. This is a compact unit — 45 mm wide, 58 mm high, 57 mm deep — sized for DIN-rail mounting in a control panel.
AC-4 rating means it can also handle plugging and inching duty, which is harder on the contacts. The 1 NC auxiliary contact (built into the order code suffix) gives you a feedback signal for the PLC or a holding circuit without adding a separate aux block. Flame retardance is V1 per UL 94, plus it meets NF F 16-101 and NF F 16-102 Requirement 2 — relevant if this goes into rail or transit applications where fire-smoke-toxicity standards apply.