The LC1K16015R7 is a TeSys K three-pole contactor rated for AC-3 duty at 16 A up to 440 V, with a 440 V AC coil and one normally closed auxiliary contact built in. AC-3 is the motor-switching category — it means the contactor is designed to make and break locked-rotor current, not just resistive loads. The 16 A rating at ≤440 V tells you the motor full-load current it can handle; above 440 V the available motor power drops, as the 4 kW at 480 V vs 7.5 kW at 380–415 V shows. The coil is 440 V AC — verify your control voltage matches before wiring. The single NC auxiliary is wired for status feedback or interlocking; if you need more aux contacts, you'll add a side-mount block from the TeSys K range.
At 45 mm wide, 58 mm tall, and 57 mm deep, this contactor fits the standard DIN-rail footprint for a 3-pole contactor in this current class. The 1.3 W heat dissipation is modest — no forced cooling needed in a ventilated enclosure, but if you're packing a row of these in a sealed box, sum the dissipation and check internal temperature rise against the contactor's rated ambient. Flame retardance is V-1 per UL 94, which is the standard for this class — it self-extinguishes within a minute after the ignition source is removed. Not the highest tier (V-0 is), but compliant for most industrial control panels.
Short-circuit coordination and withstand
The rated short-time withstand current (Icw) for the power circuit is 115 A for 1 second at 50°C, tapering to 55 A for 1 minute and 25 A for sustained periods. These numbers matter for selective coordination with upstream breakers or fuses — the contactor must survive the clearing time of the protective device without welding its contacts. For the signalling circuit, the Icw is 80 A for 1 second, 90 A for 500 ms, and 110 A for 100 ms.