The Schneider TeSys WB1EA024 is a replacement contactor coil, 24 V AC 50 Hz, designed for the CV1B and CV3B contactors in the TeSys range. It is a low-consumption coil type: inrush power draw is 90 to 110 W (220 to 270 VA at 50 Hz, 0.4 power factor), and hold-in consumption drops to 13 to 19 W (35 to 55 VA at 50 Hz, 0.35 power factor). Average resistance is 0.5 ohm, and closed-circuit inductance is 0.038 H. Control voltage limits are 0.85 to 1.1 times Uc at 50 Hz, operational up to 55 °C ambient.
This coil mounts directly onto the contactor magnet assembly of CV1B and CV3B frames. The 24 V AC 50 Hz control circuit is typical for panel applications where a control transformer supplies the coil bus. The low-consumption design keeps heat dissipation in the panel manageable — hold-in power under 20 W means the coil contributes minimal temperature rise inside the enclosure.