The Schneider Electric LP4K1201SW3 is a TeSys K contactor — a 3-pole, 3-NO device rated for motor switching in AC-3 duty at 12 A up to 440 V, and also listed for AC-4 and AC-1 utilisation categories. The 72 V DC coil includes a built-in bidirectional peak limiting diode suppressor, so no external flyback diode is needed across the coil terminals.
Sourcing reality — obsolete part
This contactor is marked obsolete by the manufacturer. If you are freezing a new design, look at the current TeSys K or TeSys Deca range for a parametric match on coil voltage, pole count, and AC-3 rating.
The same contactor also carries an AC-1 rating (resistive load) and AC-4 (plugging/inching), so it covers a wider duty range than a pure AC-3 part. The 72 V DC coil draws 1.8 W inrush and 1.8 W hold-in at 20 °C; the built-in diode suppression means the coil driver sees a clean turn-off transient, which matters for PLC or solid-state output modules driving the coil.