The LC1K1201J7 is a TeSys K three-pole contactor from Schneider Electric, rated for control applications with a 12 V AC coil. It switches motor loads up to 12 A in AC-3 duty (≤440 V) and handles resistive loads up to 20 A in AC-1.
For a 3-phase motor on 480 V, this contactor handles up to 4 kW; at 380–415 V it's good for 5.5 kW. The 12 V AC coil means it pulls in from a control transformer, not a DC bus — verify your control voltage before wiring. Heat dissipation is 1.3 W, negligible for panel thermal budgeting.