When did the QO330L200GRB change from Series S1(S01) to Series S2(S02)?

Issue:
When did the QO330L200GRB change from Series S1 (S01) to Series S2 (S02)?

Product Line:
PTFDS - FD Enclosure Systems

Environment:
QO load centers sold and supported in the USA.

Cause:
Selection of correct repair parts and accessories is contingent on clarification and determination of correct series numbers on a QO load center.

Resolution:
The QO330L200GRB Load Center changed from Series S1 to S2 in February 2009. (The Series S01 started production in December of 1997).

Released for:Schneider Electric USA