The LC1K09103K7 is a 3-pole TeSys K contactor rated 9 A in AC-3 duty at ≤440 V, which is the standard motor-switching category — so it handles a 4 kW motor at 480 V or a 2.2 kW motor at 220...230 V. The 100 V AC coil draws about 1.3 W heat dissipation, a figure to budget for in a crowded DIN-rail enclosure. One normally-open auxiliary contact is built in; if you need more, the TeSys K range accepts add-on auxiliary blocks.
At 45 mm wide, 58 mm tall, and 57 mm deep, this contactor fits the standard DIN-rail footprint for compact motor starters. The V1 flame-retardant housing (UL 94 V1) is standard for control panels. For a 4 kW motor at 480 V, the AC-3 rating is the one that governs — AC-1 (resistive) and AC-4 (inching/plugging) are also listed but at lower currents.
