The WB1KB132 is a replacement coil for the TeSys range — the contactor coil that pulls in and holds the main power contacts. It runs on 110 V AC at 50...400 Hz, with a sealed operating time of 25 ms, so it snaps the contacts closed fast enough to avoid arcing on inductive loads. It's a low-consumption coil: hold-in power sits at 0.15...0.2 W for a 1-pole contactor, scaling up to 1.2...1.6 W for a 4-pole unit. That keeps the control transformer small and the panel cool.
The 110 V AC control voltage at 50...400 Hz covers both 50 Hz and 60 Hz mains — common across European and North American panels. The wide frequency tolerance means it works on a genset or VFD-fed control transformer without derating. Inrush power hits 1100...1400 W on a 4-pole contactor during pull-in, then drops to the hold-in level. That's a short spike — the control transformer just needs to handle it for 25 ms. The 5.8 Ω average resistance at 20 °C helps confirm the coil isn't shorted when you Megger the circuit.