The Schneider LC7K12107M7 is a TeSys K 3-pole contactor rated for AC-3 motor switching at 12 A up to 440 V, with a 220...230 V AC coil and one normally-open auxiliary contact. The utilisation categories cover AC-1 (resistive), AC-3 (squirrel-cage motor starting), and AC-4 (plugging/reversing).
Motor power map and current ratings
This contactor handles 5.5 kW at 380...415 V AC and at 440 V AC, 4 kW at 480 V AC and at 500...600 V AC and at 660...690 V AC, and 3 kW at 220...230 V AC — all at 50/60 Hz. The rated operational current [Ie] is 20 A, but the AC-3 motor switching rating is 12 A (at ≤440 V). The short-time withstand current [Icw] for the power circuit is 115 A for 1 s at 50 °C, stepping down to 55 A for 1 minute and 25 A for ≥15 minutes — important for coordination studies when sizing upstream protection.
Physical integration and panel fit
Heat dissipation is 3 W, so no special ventilation in a typical panel. Flame retardance meets UL 94 V1 and NF F 16-101/102 class 2, which matters for rail and transit applications where fire-smoke-toxicity requirements apply.
Sourcing reality — obsolete part
Obsolete per the manufacturer. Sourcing is through independent channels — we quote against an RFQ on a per-lot basis.