The Schneider Electric LC1F1400F7 is a 3-pole contactor from the TeSys F range, rated for 1400 A conventional free-air thermal current (Ith) at 40 °C in AC-1 utilisation category, meaning it is sized for switching resistive loads — heating banks, furnace elements, large lighting arrays — where the current waveform stays near-sinusoidal and inrush is minimal. The 110 VAC 40-400 Hz coil draws 2200 VA inrush and 36 VA hold-in at 20 °C, with a drop-out threshold between 0.3 and 0.5 Uc, so the coil releases reliably on a sagging control bus. Plate-mounted, with power-circuit bolted connections or busbar up to 100 x 5 mm; the control circuit uses screw-clamp terminals accepting 1 to 4 mm² flexible or solid.
Certified to IEC 60947-4-1, EN 60947-4-1, UL 60947-4-1, and CSA C22.2 No 60947-4-1 — the contactor standards for motor starters and controllers. Rated insulation voltage (Ui) is 1000 V per IEC/UL 60947-4-1, with an impulse withstand voltage (Uimp) of 8 kV, placing it in overvoltage category III for fixed-installation distribution panels. The breaking capacity is 2100 A conforming to IEC 60947-4-1, and the short-time withstand current (Icw) holds 8000 A for 10 s, 6000 A for 30 s, and 4500 A for 1 minute — figures that govern coordination with upstream protective devices.
Integration notes
Plate-mount only — no DIN-rail adapter for this frame. The 438 mm width and 332 mm height require a backplate or sub-panel with clearance for the 238.6 mm depth plus busbar bends and cable bending radius. Power-circuit bolted connections accept a 100 × 5 mm busbar per pole; two cables per phase can be terminated. Control-circuit screw-clamp terminals accept 1 to 4 mm² flexible with or without ferrule, or solid. Tightening torque: 1.2 N·m on the control circuit, 58 N·m on the power circuit. The 36 W heat dissipation (150 W per pole in AC-1) must be factored into the enclosure ventilation — at 600 cycles/hour and 55 °C ambient, the thermal load is continuous.