It is the replacement coil for TeSys CV1B and CV3B contactors — the part you order when the original coil fails or you are building a spare kit for a panel that uses those frames. Rated inrush power sits at 75 to 95 W (225 to 275 VA at 60 Hz, power factor 0.34), dropping to a hold-in consumption of 10 to 13 W (35 to 55 VA at 60 Hz, power factor 0.37). The coil resistance measures 10.1 Ω at 20 °C; closed-circuit inductance is 0.66 H. The control voltage limits are 0.85 to 1.1 times Uc at 60 Hz, up to 55 °C ambient.
Because the coil is obsolete, the immediate question is whether your existing contactor frame (CV1B or CV3B) can accept a substitute coil from the same TeSys family. The WB1EA100 is a 110 V AC 60 Hz low-consumption coil; any replacement must match the control voltage, frequency, and mechanical fit to the contactor's magnet system. Do not assume a different voltage variant will physically interchange — the coil footprint and terminal arrangement are specific to the frame size.