The WB1JB429 is a low-consumption contactor coil from the Schneider Electric TeSys range, designed to operate CV1B and CV3B contactors. It is rated for 127 V DC control voltage with a coil resistance of 95.85 Ohm at 68 °F (20 °C). The AC/DC control circuit type means it accepts either supply, simplifying panel wiring where DC control is standard.
The 127 V DC control voltage is the coil's nominal pick-up voltage — it must match the control circuit voltage in the panel. The 95.85 Ohm resistance at 20 °C gives the steady-state coil draw (about 1.3 A inrush, lower hold), which matters for sizing the control transformer and verifying the DC supply's current capability. The low-consumption designation means the coil's power demand is reduced versus standard TeSys coils, useful in panels with limited control supply headroom.