The LP4K1201CW3 is a 3-pole contactor from the TeSys K range, rated for AC-3 duty at 12 A up to 440 V, with a 36 V DC coil that includes a built-in bidirectional peak limiting diode suppressor for coil suppression. The 1 NC auxiliary contact is included for feedback or interlocking.
The 12 A AC-3 rating is the motor-switching current — the figure that governs contactor selection for standard squirrel-cage motors. The same contactor also carries an AC-1 rating (resistive load) and AC-4 rating (inching/plugging), so it covers a range of load types without oversizing. The 36 V DC coil draws 1.8 W holding power at 20 °C, which is typical for this frame size and keeps the control transformer load modest.