What this contactor does
The LC1K0910GK7 is a 3-pole TeSys K contactor from Schneider Electric, rated for motor switching in AC-3 duty at 9 A up to 440 V. The 4 kW motor power rating at 480 V AC 50/60 Hz gives you a quick size check against a 5 HP motor at 460 V line.
Coil and mounting fit
Coil is 180 V AC, so this lands in control panels with a 208/240 V step-down transformer center-tapped or a dedicated 180 V control bus.
Ratings that matter for the BOM line
AC-1 (resistive) rating of 20 A covers heater or lighting banks; The 1.3 W heat dissipation is low enough to ignore in a standard panel's thermal budget — no forced cooling needed for a single contactor. Flame retardance is V1 per UL 94, which is the minimum for panel approvals in most industrial jurisdictions.