It is the replacement coil for TeSys F contactors, meaning if you have a contactor with a failed coil or need to swap voltage, this is the direct fit part.
Mounts directly onto the TeSys F contactor base; no additional wiring harness needed. The coil terminals accept standard ring or fork lug connections. Panel builders should confirm the control circuit voltage matches the existing transformer tap before installing — a 65 V coil on a 48 V tap will not pull in reliably.
