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What is the replacement for the OLD QMB3610T Series 4 branch switch?

Obsolete catalog number.

Product Line:
QMB branch switches 

Products sold in the United States.

Maintenance replacement

The replacement will be the Series D2 catalog number QMB363T. BUT depending on the old type of QMB panel, there might NOT be a replacement or it might require Plug-On Extension assemblies. See below
1) If the old QMB panel is a Type QM(31-Inch wide) Manufactured before 1961, there is NO replacment switch that will work. 
2) If the old QMB panel is a Type QM(31-inch wide) Manufactured after 1961 But before Oct. 1984, the QMB363T will work, WITHOUT requiring Plug-On extensions.
3) If the old QMB panel is a Type QW(38-inch wide) Manufactured before 1984 the QMB363T will work, BUT it REQUIRES the Plug-On Extension assemblies catalog number QMB310EX.

CTA-ID : 2002165

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