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What are the blanks extensions HLW4EBL and HLN4EBL used for?

HLW4EBL is for use with  for H and J frame breakers with Micrologic trip units 5 or 6 mounting on the wide side of an I-line panelboard.

HLN4EBL is for use with  for H and J frame breakers with Micrologic trip units 5 or 6 mounting on the narrow side of an I-line panelboard.


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