TeSys F LC1F2254F7 — 315 A AC-1 Contactor, 4-Pole, 110 VAC Coil
The Schneider Electric LC1F2254F7 is a 4-pole contactor from the TeSys F series, rated for 315 A in AC-1 utilisation category (resistive loads) at up to 440 V. The 110 V AC control coil operates across 40-400 Hz, with a closing time of 35 ms and opening time of 130 ms at rated control voltage. It's built for panel mounting on a plate, not DIN rail — plan for bolted or bar connections on the power side and screw-clamp terminals on the control side.
What the AC-1 315 A Rating Means for Your Load
The 315 A figure is the rated operational current (Ie) for AC-1 duty — resistive loads like heaters, furnaces, or lighting banks. That's not a motor-rating number; AC-3 (motor) current will be lower. The contactor's average impedance per pole is 0.32 mΩ at Ith 315 A, 50 Hz, and heat dissipation runs 8-9.8 W total, with 32 W per pole in AC-1 service. For motor switching, you'd need to derate based on the AC-3 curve — this part is specced for the resistive load class.
Electrical and Mechanical Margins
Rated insulation voltage (Ui) is 1000 V per IEC 60947-4-1, with impulse withstand (Uimp) at 8 kV — overvoltage category III. The associated fuse rating is 315 A gG or 250 A aM at ≤ 440 V. Rated breaking capacity is 1800 A per IEC 60947-4-1. Control circuit voltage limits: pick-up at 0.85-1.1 Uc, drop-out at 0.2-0.55 Uc across 40-400 Hz at 55 °C.
The contactor complies with JIS C8201-4-1, IEC 60947-1, EN 60947-1, IEC 60947-4-1, and EN 60947-4-1. The front face with shrouds achieves IP20 per IEC 60529 and VDE 0106. Protective treatment is TH (tropicalised). Dimensions: 197 mm height, 208.5 mm width, 181 mm depth.