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Why is 7 1/2 HP the maximum rating that we offer for the 240V single phase 8538 combination starter?

Issue:
Is 7 1/2 HP the maximum rating that we offer for the 240V single phase 8538 combo starters?

Product Line:
NEMA Contactors and Starters

Environment:
Class 8538 Combination Starters

Resolution:
The applicable NEMA category definition does not include or recognize anything above 7 1/2 HP for 240 volt single phase.
Customer will have to size by the full load current.