Part Identity and Sourcing Status
The LX1FG660 lifecycle status is Obsolete.
Electrical and Mechanical Specifications
The coil operates on a 660...690 V AC 50 Hz control circuit, with an inrush power consumption of 805 VA at 50 Hz (cos φ 0.3) and a hold-in consumption of 55 VA at 50 Hz (cos φ 0.3). Heat dissipation is rated at 18...24 W at 50 Hz. The average resistance measures 154 Ω at 68 °F (20 °C), and the inductance of the closed circuit is 21.8 H. Operating time is specified as 20...35 ms for closing and 7...15 ms for opening. The control circuit voltage limits are: dropout at 0.35...0.55 Uc and operational at 0.85...1.1 Uc, both at 50/60 Hz and 131 °F (55 °C). The coil is supplied without a built-in suppressor module, which means the integrator must add external suppression (e.g., RC snubber or varistor) across the coil terminals to limit switching transients — a standard requirement for inductive loads in control panels.
This coil is a service part for TeSys F contactors — it mounts onto the contactor's magnet assembly and is wired to the control circuit via the coil terminals. Given the 660...690 V AC control voltage, this coil is suited for applications where the control supply is derived from a higher-voltage line, such as in heavy industrial installations with 690 V distribution. The absence of a built-in suppressor means the installer must verify that the control circuit's switching device (PLC output, relay, or contactor auxiliary) is rated for the coil's inrush current of 805 VA.