The WB1JB336 is a replacement coil for Schneider Electric TeSys CV1B and CV3B contactors. It operates on a 230 V AC control circuit at 50 Hz or 280 V AC at 60 Hz, with a low-consumption coil design that reduces the control power draw compared to standard coils. The coil holds in at 0.85 to 1.1 times Uc at 50 Hz and 60 Hz, up to 55 °C ambient.
The low-consumption coil type means lower heat dissipation inside the contactor enclosure, which can matter in densely packed panels where thermal rise is a concern. No derating curve is provided in the listing, so assume standard TeSys thermal limits apply.