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PK1MB Retaining Kit
Issue:
Can the PK1MB retaining kit be used for a backfed main breaker in the obsolete NQO or NQOB  panelboards?

Product Line:
Obsolete NQO and NQOB panelboards that were sold and supported in the USA.

Environment:
Maintenance

Cause:
Is a main breaker retaining kit available for the obsolete NQO/NQOB line of panelboards?

Resolution:
No, the PK1MB retaining kit is designed for use for load centers only and will  not work in a panelboard application.  The bolt on, QOB breakers do not require a retaining kit.  There is no retaining kit available for the NQO panelboards. .

Schneider Electric USA

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