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What does the prefix "N" mean on a molded case breaker catalog number?

Issue:
What does the "N" prefix indicate for a Powerpact Molded Case Circuit Breaker part number? For example: NPGL36120U31A

Product Line:
Molded Case Circuit Breaker

Resolution:
Prior to 2009, the "N" called out a Merlin Gerin face plate label in place of the standard Square D label.
Starting in 2009, the "N" calls out a Schneider Electric face plate label in place of the standard Square D label.

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