is there a true 400 amp panel rated as 400 continous amp

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New User
Sunnyvale, California
hello, from what i see, people on this forum are using 400amp (320 amp class) panel.
are there any 400amp panel rated as continous 400amp on the market? if yes, why not use these panels?
for the 400amp (320 amp class) panel, are there 2 subpanels and is max current for each panel 160amp? is there a different configuration available where one panel might support max 200amp and a second panel supports 120amp?
any recommendations on solar ready panels?
i am in the process of upgrading to 400amp, required by city for our addition because we are going all electric, so want to understand a little bit before engaging the electrician.
thank you in advance.
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