It is the part you swap when the coil burns out or the control voltage changes, not the whole contactor assembly. Rated for 48 V AC 50...400 Hz or 48 V DC control circuits, with a latching operating time of 35...40 ms and unlatching at 50...100 ms. The coil holds within 0.85...1.1 Uc of the rated voltage. Coil resistance measures 1.42 Ohm for the latching winding and 220 Ohm for the unlatching winding at 68 °F (20 °C). That dual-winding design is typical of mechanically-latched contactors — the latching coil pulls the armature in, and the unlatching coil releases it, so the contactor stays closed without continuous power draw.
The 48 V AC/DC control voltage is the headline fit parameter. This coil works on either AC or DC control, which simplifies stocking — one part covers both control schemes. The 50...400 Hz frequency range on the AC side covers standard 50 Hz and 60 Hz industrial supplies, plus higher-frequency applications like 400 Hz aircraft ground power. Mechanical durability is rated at 1 Mcycles, meaning the coil and its mechanical linkage are good for one million operations before wear-out becomes a concern. That is a standard industrial rating for a contactor coil in this class — fine for most process and conveyor applications, but worth noting for high-cycling duty like a stamping press or rapid-indexing line. Maximum operating rate is 120 cycles per hour at 104 °F (40 °C). Exceed that rate and the coil will overheat.