The LX1FF170 is a replacement contactor coil from the TeSys F range, designed to fit TeSys F contactor frames. It operates on a 170 V AC 50 Hz control circuit, drawing 550 VA inrush and 45 VA hold-in power at 20 °C with a cos phi of 0.3. Closing time runs 23 to 35 ms, opening 5 to 15 ms — fast enough for standard motor switching but not for high-speed logic applications.
Sourcing reality for an obsolete part
Schneider has marked the LX1FF170 as obsolete.
Coil electrical characteristics
The coil has no built-in suppressor module. Average DC resistance is 15.02 Ω at 68 °F (20 °C); inductance of the closed circuit is 2.03 H. Drop-out occurs between 0.35 and 0.55 Uc, and the coil operates between 0.85 and 1.1 Uc at 55 °C.
Thermal and mechanical limits
Heat dissipation runs 12 to 16 W at 50 Hz — enough to consider ventilation if multiple coils are packed tightly in a panel.