The LP1K0901BD3TQ is a 3-pole contactor from the TeSys K series, rated for AC-3 and AC-1 utilisation categories. It switches 9 A at 440 V in AC-3 motor duty, with a 24 V DC coil that includes a built-in bidirectional peak limiting diode suppressor — that suppressor handles the coil's inductive kick internally, so you don't need an external flyback diode across the coil terminals. The 24 V DC control circuit draws 3 W holding power at 20 °C, with a 3 W inrush at the same temperature. The contactor's pole composition is 3 normally-open main contacts, no auxiliary contacts built in.
The compact footprint (57 mm deep, 45 mm wide, 58 mm high) and the TeSys K mounting pattern mean a functional equivalent may fit the same DIN-rail slot, but pin-compatibility and coil suppression need to be verified against the specific replacement candidate.