What does ``PLL`` on HC4286DBPLL mean?

Issue:
Meaing of form PLL on an I-Line panels

Product Line:
I-Line panelboards

Environment:
Products sold in North America

Resolution:
PLL means Powerlogic Left.  This is a 14 inch side gutter that has been added on the left side of the enclosure for Powerlogic Metering installation.

Released for:Schneider Electric USA