The Schneider Electric TeSys WB1EA880 is a low-consumption AC/DC contactor coil designed to drive CV1B and CV3B contactors. It's a service part — the coil itself, not the full contactor assembly — so if you're rebuilding a CV1B or CV3B that's already in the panel, this is the drop-in replacement coil.
What the specs tell you
The coil accepts both AC and DC control voltage, which simplifies panel wiring if you're mixing control supplies. The low-consumption design means it draws less holding current than a standard coil — relevant if your control transformer is already near its VA budget. It's a single-unit package, so order one per contactor you need to re-coil.