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What is the main incoming lug data for a 400amp LA frame main breaker in an NF Panelboard?

Main lug data 400amp LA frame main breaker

Product Line:
NF Panelboards.

Products sold in the North America

The LA breaker lugs will accept (1) #1-600 kcmil or (2) #1-250kcmil Al/Cu.

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