Switches on new RS 450 MC4

Hello!

What are the red switches on the new RS450 for?

Looks like exactly that, switches to isolate each string. I see the inputs are also fused.
Not even on the Victron site in my country.

We already had that question one or two weeks ago, it’s in the manual.
https://www.victronenergy.com/media/pg/SmartSolar_MPPT_RS/en/troubleshooting.html#UUID-a5cdf906-e401-1b6f-3923-3b7bb7b6f7ab

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