The LX9FH0752 is a specific contactor coil from the TeSys F range, designed as the replacement or spare coil for TeSys F contactors that require a 75 V AC 40...400 Hz control circuit. It is the low-consumption variant, meaning the hold-in power is kept to 8...10 VA at 20 °C, which reduces heat buildup inside a panel compared to standard coils. The 25 ms opening and 45 ms closing times are the mechanical operating times you design your control sequence around — the coil pulls in fast enough for most motor-start and isolation duties, but the 45 ms closing sets the minimum off-time before re-energizing if you are cycling at the maximum rate of 3600 cycles per hour at 55 °C.
Control Voltage and Operating Limits
Rated at 75 V AC 40...400 Hz. Operational limits are 0.85...1.1 Uc at 55 °C. Drop-out occurs between 0.35 and 0.55 Uc. Inrush power is 560...660 VA at 20 °C, dropping to 8...10 VA holding.
Thermal and Mechanical Reality
Heat dissipation is 8.4...10.4 W. The coil has no built-in suppressor module. Mechanical durability is 10 Mcycles. Ambient temperature range is -5...55 °C.