Product overview
The LP5K12107EW3 is a TeSys K reversing contactor from Schneider Electric, configured as a 3-pole normally-open (3 NO) device rated for AC-3 duty at 12 A up to 440 V, with a 48 V DC coil.
Key ratings and their meaning
Rated operational voltage of 690 V AC 50/60 Hz on the power circuit means this contactor can handle line voltages up to that level, though the AC-3 motor-switching rating is specified at ≤440 V. Utilisation categories include AC-1 (resistive loads), AC-3 (squirrel-cage motors), and AC-4 (plugging/reversing). AC-4 is the most demanding duty for reversing contactors, as it involves switching full motor current during reversal — this part is designed for that cycle. Mechanical robustness is documented for shock and vibration: the contactor withstands 15 Gn shocks (11 ms) when closed, and 10 Gn when open, on the Z axis. Vibration resistance is 4 Gn closed, 2 Gn open across 5–300 Hz (IEC 60068-2-6). This qualifies it for use in equipment subject to transport or machine vibration.
Because it is obsolete, a formal replacement should be evaluated for new designs. We can assist with cross-reference recommendations upon request.
