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Are QO load centers suitable for use on a 48 VDC application?

Article available in these languages: Spanish

Issue:
Product Design Features 48Vdc application of QO Load Centers

Product Line:
QO Single phase Main Lug Load Centers

Resolution:
The QO, single phase, main lug load centers are UL LISTED, File E6294, for use on 48 Vdc systems. The load centers labeling will NOT be MARKED showing the DC voltage system, however they are suitable for the application. QO branch breakers, 2p, 10 - 60 A, with a 5272 suffix, are UL listed for use on 48 Vdc systems. Short circuit current rating is limited to 5 kA when used on 48 Vdc.

NOTE: This does NOT apply to the main breaker load centers with the QOM1 or QOM2 main breakers. The QOM1 and QOM2 main breakers DO NOT have DC voltage ratings.

Schneider Electric USA

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