The LC1K16106Q7 is a 3-pole (3 NO) contactor from the TeSys K compact family, rated for control applications with AC-3 and AC-1 utilisation categories. Its headline operational current is 16 A in AC-3 duty at ≤440 V — that is the motor-switching rating you use for sizing: it handles the inrush and breaking of a 3-phase induction motor up to 7.5 kW at 380…415 V AC, 5.5 kW at 440 V, or 4 kW at 480 V and above (500…600 V and 660…690 V bands also support 4 kW). The AC-1 resistive rating is 20 A, which governs heater or lighting loads with no inductive kick. The 1 N/O auxiliary contact is built into the compact frame — no add-on block needed for basic feedback or interlocking. Heat dissipation is 1.3 W, which is low enough to ignore in most panel thermal budgets, but worth noting if the enclosure is sealed and densely packed. Flame retardance is V1 per UL 94, meeting the typical panel-board flammability requirement. Short-time withstand current (Icw) ratings are given for coordination with upstream protection: 115 A for 1 s, 105 A for 5 s, 100 A for 10 s, tapering to 25 A for continuous duty (≥15 min) on the power circuit. These values let you verify selectivity with a motor circuit protector or fuse — the contactor must clear without welding under the let-through of the chosen OCPD.
No second-source cross-reference is needed unless your procurement policy mandates one — the TeSys K family is a single-vendor platform, but the Active status means supply continuity is not a concern for new designs or spares.
Deployment context
The 45 mm width occupies two 22.5 mm module spaces, which matters for panel fill factor when grouping multiple contactors or adding auxiliary blocks. The 1.3 W dissipation per unit stacks linearly — a row of ten adds 13 W to the enclosure heat load, manageable with passive ventilation in most industrial panels.