What does the S2 designate for part number 8536SBO2S2?

Issue:
Identifying options on a NEMA starter

Product Line:
NEMA Contactors and Starters

Environment:
North American Products

Cause:
Identifying options on a NEMA starter

Resolution:
This is a special 3 phase starter used inside the Class 8941 duplex controller.  This is not for standalone use, for replacement purpose only.

Released for:Schneider Electric India