Heavy-Duty Resistive Load Switching
The Schneider Electric LC1F2654P7 is a 4-pole contactor from the TeSys F range, rated for 350 A in AC-1 utilisation category at ≤ 440 V. That AC-1 rating means it is built for resistive loads — heaters, ovens, lighting banks — where the current waveform stays sinusoidal and inrush is minimal. The 4 NO power poles give you four independently switched phases or a combined three-phase plus neutral break, common in panel builds for industrial ovens or large resistive banks. Coil is 230 V AC, 40-400 Hz, drawing 650 VA inrush and 10 VA hold-in. Drop-out voltage band is 0.15-0.2 Uc.
Rated for the Panel Environment
Mounts to a plate (not DIN rail), so plan for a drilled backplate or sub-panel in your enclosure. Dimensions are 203 mm high, 244.5 mm wide, 213 mm deep — a substantial footprint that needs clearance for the power busbars (up to 32 x 4 mm bar or 240 mm² cable lugs). Tightening torque on the power circuit is 35 N.m, which is high; a torque wrench is mandatory for the M10-class bolted connections. IP20 front face with shrouds per IEC 60529 and VDE 0106 — finger-safe from the front once shrouded, but the rear terminals are live. Install in a locked cabinet or behind a panel door. The TH protective treatment adds a conformal coating for humid or mildly corrosive atmospheres, though not a full washdown rating.
Thermal and Coordination Data
Heat dissipation is 8 W total, 37 W per pole in AC-1 duty. That 37 W per pole is the figure to use for enclosure thermal calculations — at 350 A, the pole resistance (0.3 mOhm average at 50 Hz) generates significant heat. The associated fuse recommendation is 315 A aM or 400 A gG at ≤ 440 V, giving you a coordination window for type-2 coordination with motor-protective breakers or fuses. Mechanical durability is 10 million cycles, maximum operating rate 2400 cycles per hour at 55 °C.