Multi RS Solar with 6 x 550W panels, 120V startup voltage an issue?

The new Multi RS has two trackers, so with 6 panels it would be 3 solar panels for each tracker. The panels I’m lookin at are 550W with a Vmp 42.28V, so 3 of them should make it 126.8V. But does this mean they won’t power up until later in the day when the sun is near max power?

Theoretically yes.
Practically, at about 95V, they will “fire-up”.
Here’s a graph from my system.

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Great! How early in the morning would I get to ~95V with these kind of panels? Any idea based on your experience?
The other option would be to just use on tracker, but then the max input is reduced to 3kW and also no benefit of the separate trackers when some panels are partly shaded.

It heavily depends on your panels’ behavior / characteristics…
Try to buy another 4 panels and split them 5 and 5.
They are not that expensive nowadays… About 15 cents per Wh.

You also won’t be getting more than 3kW with all panels on just one tracker.
The real life (NMOT/C) power is about 80% of the declared power, at best.
So in your case, you’ll rarely see above 550 x 6 x 0.8 = 2640Wp.

I currently have 5 x 550W panels with the Multi RS single tracker (earlier version). The record is ~3200W (640W from each panel). But yes normally it’s around 450-550W per panel.

I only have space for 6 together, and maybe another 4 or 6 panels 10 meters away but with different shade characeristics.