The Schneider Electric LC1F3304L7 is a TeSys F series 4-pole contactor rated for 400 A in AC-1 utilisation category at ≤440 V, with a 208 V AC 40–400 Hz control circuit. The AC-1 rating means it is sized for resistive loads — heaters, lighting banks, or transformer primaries — where the load current stays sinusoidal and inrush is minimal. The 4 NO power pole configuration gives you four normally-open main contacts.
This part is end-of-life (EOL) per the manufacturer's lifecycle record. No official successor order code is listed in the evidence. For a BOM line that calls out LC1F3304L7, sourcing runs through independent distribution channels — quoted to order against an RFQ, with availability and current pricing confirmed at quote time. If you are planning a new panel design, consider whether a current-production TeSys F variant with the same footprint and AC-1 rating can be specified instead; the mechanical and electrical characteristics of the TeSys F family are well-documented, but pin-compatibility should be verified against the existing wiring scheme.
Mounts on a plate (not DIN rail) — the mounting support is plate-type. The power circuit connection uses bolted lugs or bar: ring terminals up to 240 mm² or a 30 x 5 mm bar. Torque the power terminals to 35 N·m (309.8 lbf·in) and the control circuit screw clamps to 1.2 N·m (10.6 lbf·in). The control circuit accepts 1–4 mm² flexible or solid wire, with or without ferrules. IP20 front face with shrouds means the contactor is protected against finger contact from the front once shrouds are fitted — standard for enclosed panel installation.
Mechanical durability is rated at 10 million cycles, and the maximum operating rate is 2400 cycles per hour at 55 °C. Heat dissipation is 8 W total, with 44 W per pole in AC-1 duty — so at full rated current each pole sheds 44 W, and the total through the enclosure must be considered in the thermal budget. The contactor is rated for operation up to 3000 m without derating. Standards compliance includes IEC 60947-4-1, IEC 60947-1, EN 60947-1, and JIS C8201-4-1 — covering motor-starter and contactor performance, coordination, and test sequences.