Contactor question

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Original poster: "Richard W. by way of Terry Fritz <teslalist-at-qwest-dot-net>" <potluck-at-xmission-dot-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