Issue:
Replacement for a QMB310T, series 1 through 4 switch
Product Line:
QMB Branch Switches
Resolution:
This will depend on the the existing QMB panelboard interior. If the panel has round busbars, there is NO replacement. Otherwise, the replacement switch would be a QMB323TD if the interior is type QM (31 inch wide; manufactured after 1961 but before October 1984) or type QW (38 inch wide; manufactured before 1984). If the existing interior is type QW with flat bus bar, the QMB310LEX plug-on extension assembly may also be required. Use the outside poles.
Replacement for a QMB310T, series 1 through 4 switch
Product Line:
QMB Branch Switches
Resolution:
This will depend on the the existing QMB panelboard interior. If the panel has round busbars, there is NO replacement. Otherwise, the replacement switch would be a QMB323TD if the interior is type QM (31 inch wide; manufactured after 1961 but before October 1984) or type QW (38 inch wide; manufactured before 1984). If the existing interior is type QW with flat bus bar, the QMB310LEX plug-on extension assembly may also be required. Use the outside poles.
Released for:Schneider Electric USA
