Doe Square D offer a manual transfer equipment kit for back feeding 2 branch located main breakers for a QO, Main Lug Only, single phase load center? (used for a back-up power supply application).

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Issue:
Product Design Features

Product Line:
QO Load Centers

Cause:
Application

Resolution:
Yes,
Use a QO2DTIM to secure and mechanically interlock two branch breaker on the QO816L100F, QO816L100DF, QO816L100S, QO816L100DS, QO816L100DFCU, QO816L100DSCU, QO816L100RB or QO816L100RBCU load centers.
Use a PK4DTIM4LA to secure and mechanically interlock two branch breakers to the right side of the interior of a 125 ampere convertible main load center. (See FA322648 for installation video)
Use a PK4DTIM4LAL to secure and mechanically interlock two branch breakers to the left side of the interior of a 125 ampere convertible main load center.
Use a PK4DTIM4HA to secure and mechanically interlock two branch breakers to the right side of the interior of a 150-225 ampere convertible main load center. (See FA322649 for installation video)
NOTE: This is applicable for single phase QO load centers only.