What is the part number for the load base assembly for the Busway (Series 5 and newer) PQ3620G, PQ4620G, PS3620G, and PS4620G fusible plug-in unit?

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Issue:
What is the part number for the load base assembly for the Busway (Series 5 and newer) ?

Product Line:
Busway

Environment:
UL 857, CSA C22.2 No. 27-1973, NFPA 70 Art. 368

Cause:
With normal wear and tear or due to lack of timely maintenance, the load base assembly may need replacement.

Resolution:
The replacement load base assembly is 45201-229-50 for Series 5 and newer plug-in units. For Series 4 and older, this part is no longer available and the plug will have to be replaced.