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What is the suffix ``RA`` in the catalog number PQ3610GRA mean?

What does the "RA" suffix indicate on a PQ3610GRA 100A/3P busway plug in unit?

Product Line:
I-Line Busway and Accessories

Busway plug in unit selection 

Clarification of catalog number

The ``RA`` suffix means the plug-in unit will include a Class R fuse rejection kit (``R``) and copper compresson lugs (``A``)in lieu of the standard aluminum mechanical lugs.

CTA-ID : 2037459
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