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Can a QO-GFI, QO-CAFI, QO-DF, or QO-EPD breaker be used on a 240V ungrounded delta system?

Issue:
Are QO GFI, CAFI, DF or EPD/EPE breakers rated for 240V delta application?

Product Line:
QO Circuit Breakers

Environment: 
QO-GFI, QO-CAFI, QO-DF, QO-EPD, QO-EPE Circuit Breakers

Resolution: 
No.  QO-GFI, QO-CAFI, QO-DF, QO-EPD and QO-EPE breakers are not rated for this application.  They require a grounded system with no more than 120Vac to ground.
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