The Schneider Electric LC1F2254X6 is a TeSys F series contactor with 4 normally-open power poles, rated for 315 A in AC-1 utilisation category (resistive loads) at up to 690 V AC, 50/60 Hz. The 4 NO configuration means it switches four separate resistive circuits simultaneously — common in electric heating banks, large lighting groups, or as a main line contactor in distribution panels where no motor inrush current is present. Control is 600 V AC at 60 Hz, with a 970 VA inrush and 66 VA hold-in draw. The coil holds between 85% and 110% of rated voltage at 55 °C and drops out between 35% and 55% — a wide dropout margin that prevents nuisance reclosure on brownouts.
The TeSys F family is broad, and a parametric cross-reference to a current-production TeSys contactor may exist — but no direct successor order code is listed on this record. An RFQ with your required ratings (pole count, coil voltage, mounting) is the fastest path to a confirmed alternate.
The headline rating is 315 A at ≤ 440 V in AC-1 duty. AC-1 covers resistive loads (heaters, ovens, lighting) with no significant inrush — the contactor is not rated for motor starting (AC-3) at this current level. If your application involves induction motors, you need the AC-3 rating for the same frame, which will be lower. The 315 A figure is the thermal current (Ith) at 50 Hz, with an average pole impedance of 0.32 mOhm, yielding 18–24 W total heat dissipation and 32 W per pole at full load. Breaking capacity is 1800 A per IEC 60947-4-1 — adequate for clearing faults in a resistive-load circuit protected by a 315 A gG fuse or 250 A aM fuse at ≤ 440 V. The contactor carries overvoltage category III (fixed installation) and rated insulation voltage of 1000 V per IEC or 1500 V per VDE 0110 group C. For a contactor that cycles infrequently (e.g., once per shift in a heating circuit), that is effectively a lifetime part. For high-speed resistor banks cycling every few seconds, the 2400 cyc/h limit governs.
Mounts to a plate (not DIN rail) — the TeSys F frame at this current class is bolted. Dimensions: 8.2 in wide, 7.8 in high, 7.1 in deep. Power connections are bolted bar or lug terminals accepting up to 185 mm² cable; control circuit uses screw clamp terminals for 1–4 mm² flexible or solid wire. Tightening torque: 35 N·m on the power circuit, 1.2 N·m on control. Protective treatment is TH (tropicalized) for humid environments.