What this coil is — and what it is not
The WB1GA110 is a replacement coil for the TeSys CV1B and CV3B contactor frames — it is not a complete contactor, just the electromagnet that pulls the main poles in. If your BOM line calls the full contactor assembly, this coil alone will not get the line running. It belongs to the TeSys range, Schneider's broad industrial contactor and motor starter family, and is classified under the 18402-WORLD SERVICE PARTS (CONTROL ACCESS) category — meaning it was originally catalogued as a global service spare, not a first-fit production part.
110 V AC 50 Hz — the control voltage and what it demands
That means the coil pulls in reliably between roughly 93.5 V and 121 V — a standard tolerance for industrial AC coils, but one that matters if your control transformer is undersized or your line voltage sags under load. Inrush power is 130 to 160 W (345 to 415 VA at 50 Hz, power factor 0.38), dropping to 16 to 25 W (45 to 65 VA, power factor 0.35) once the contactor seals. That inrush-to-hold ratio of roughly 6:1 in VA is typical for AC-operated contactor coils — the control transformer must be sized for the inrush peak, not the steady-state hold-in, or the voltage will dip below the dropout threshold during pickup. Average coil resistance is 7.66 ohms at 20 °C; inductance of the closed circuit is 0.55 H. These numbers are useful for verifying the coil with an ohmmeter during fault isolation — a shorted turn or open winding will read well outside this range.
Obsolete — sourcing reality for the WB1GA110
Schneider Electric lists the WB1GA110 as obsolete. Sourcing goes through independent surplus and broker channels. Availability is lot-specific — quantities are confirmed at RFQ, not held in forward stock. The same part, different passport: a genuine Schneider coil sourced from regional surplus, not through the factory's current production line. Let me be transparent — the warranty is the distributor's, not Schneider's factory warranty, because the part left the authorized channel when it was last sold new.