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Does Square D manufacture a 400A CSED with a single 400A main breaker?

Can you use a CSED to feed 400 A from a single disconnect?

Product Line:  
Residential electrical distribution

Combination Service Entrance Devices (CSEDs)

Yes, we have the following CSEDs which include a 400 A main breaker disconnect to feed out directly.  The CUM400CB is ring type and the QUM400CL and QUM400CK are ringless type.  They will all include an LJL36400U31X main breaker.  

NOTE:  These may also be modified to accept two 200 A Q-frame breakers to feed downstream load centers.  The Q-frame breakers must be purchased separately and you MUST also purchase the installation kit BMK2Q400 to make this conversion.  
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