I have 2100w of solar on a van, about 200v total. What solar isolator switch should I use?

[Cardude]

I see the cheap rotary switches on Amazon that say they are rated for 1000vdc. Is that safe, or do I need something different?

https://a.co/d/iL9N7Gs

My inverter is an EF4-3000w and I have two 48v server rack batteries.

 

[hwy17]

It depends how much you trust chinese switches. The better product would be an IMO isolator.

For a van project I would probably go ahead and use that and try not to switch it under load (while generating, shut down charge controller before disconnecting unless it's an emergency).