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Do QOB-GFI breakers take an additional space to mount?

Does a QOB120GFI take 2 spaces?

Product Line:
Miniature Circuit Breakers

No, GFI breakers do not require an additional space (QOB-GFI single poles take up one space, QOB-GFI two poles take up two spaces, and QOB-GFI three poles take up three spaces).
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