The Schneider Electric TeSys K LC3K06U7 is a pre-wired star delta starter built for motor control under AC-3 utilisation category — the duty class that governs switching of squirrel-cage motors during start and run. Three power poles, each 3 NO, rated at 6 A. The 240 V AC coil is designed for direct panel supply without a control transformer step-down. This is not a bare contactor; it is a factory-assembled star-delta transition unit, meaning the internal wiring and timing logic for the transition from star to delta are integrated. That saves panel-build labour and reduces wiring error risk on repetitive motor starts — a poka-yoke advantage for lines where traceability matters.
The AC-3 rating at 6 A defines the motor full-load current it can switch without accelerated contact wear. For a 400 V three-phase motor, that corresponds roughly to a 3 kW load — typical for small conveyors, pumps, or fan starters in a Tier-1 cell. The 240 V AC coil pull-in holds reliably across the 0.85–1.1 Un range common in industrial supplies. Mechanical robustness is documented: the contactor withstands 4 Gn vibration when closed (5–300 Hz) and 15 Gn shock on the Y and Z axes when closed. That covers the vibration profile of a machine-mounted panel next to a press or conveyor drive.