Original poster: "Richard W. by way of Terry Fritz <teslalist@qwest.net>" <potluck@xmission.com> Hey List, Scenerio: Variac stack feeding a 10Kva pig 240vac at 35 amps. 2 poles on the contactor are being used (red and black wires) Contactor Arrow Hart Size 3 240v 25hp 1 phase 120 FLA 720 LRA Under the above conditions the contactor opens.... Do I need some kind of arc protection and if so how? Thanks