Ok go to YouTube and search span smart panel.
I found some videos, and while they don’t give any specific info about the panel, you can at least see it.
The main breaker is a Square D QOVH. The bus looks very interesting and each video I watched showed a mix of manufacturer breakers from Siemens, Eaton, and Square D. Just standard stab on breakers.
What I think is happening, is each individual space on the bus is controlled independently by a relay behind the bus bar; the panel is very deep. So the relay switching happens before the branch breaker. It also has feed through lugs.
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