The Schneider Electric TeSys F LC1F1250R7 is a 3-pole contactor rated for 1260 A conventional free-air thermal current (Ith) and the same 1260 A under AC-1 utilisation category at 40 °C, meaning it is sized for switching resistive heating loads, lighting banks, or other non-inductive circuits up to that current. The 440 VAC control coil (40-400 Hz) pulls 1650 VA inrush and holds at 22 VA. Plate-mounted, it measures 13.3 in high by 12.2 in wide by 10.04 in deep — a substantial footprint that needs panel layout planning.
Rated operational voltage is up to 690 V AC 50/60 Hz, with a rated insulation voltage (Ui) of 1000 V per IEC 60947-4-1 and 1500 V per VDE 0110 group C. Short-time withstand current (Icw) is 8000 A for 10 s, 5200 A for 30 s, and 3000 A for 3 min at 40 °C, giving coordination headroom for upstream protective devices. The associated fuse rating is 1000 A gG at up to 440 V. Rated breaking capacity is 1890 A conforming to IEC 60947-4-1. The control circuit operates on AC 40-400 Hz with a voltage range of 0.85 to 1.1 Uc for pickup and drops out between 0.25 and 0.5 Uc at 55 °C. Closing time is 40-80 ms; opening time is 100-200 ms. Maximum operating rate is 1200 cycles per hour at 55 °C. Heat dissipation is 20 W total, with 120 W per pole under AC-1 load — factor that into enclosure thermal management.
The LC1F1250R7 is designed and tested to EN 60947-1, IEC 60947-4-1, and JIS C8201-4-1. The protective treatment is TH (tropicalized) for humid environments. Terminal connections: power circuit uses bar connections (2 x 100 x 5 mm); control circuit uses screw clamp terminals accepting 1-4 mm² flexible or solid wire. Tightening torque is 58 N.m for power circuit and 1.2 N.m for control circuit.
Sourcing this part
Given the EOL status, this contactor is sourced through our independent supply network. For a new design, consider evaluating a current-production TeSys contactor with equivalent AC-1 current rating and coil voltage to avoid future obsolescence risk.