I run two of those higher PV voltage units. The last one was on special from Ebay for ~$365. I have an ongoing review on that unit in the AIO Forum. Yes the AC out would use a 30a breaker if you wanted to take full use since it can output 27.5a.
The 4000w limit would put you into over paneling realm since it is an 80a battery charge max. 80a at 25vDC =2000w That is not necessarily bad but would lead to maxing out production at the 2000w level.
Big thing to keep in mind with the high voltage PV units is startup voltage and minimum operating voltages. Your Vmp should be about 10% higher than minimum for the AIO.
ETA: Funny thing when I looked back at the my Ebay purchase I happened to notice this 4000w AIO* with some nice looking specs. It is a name I have not see before, Sumry. But not bad priced for a 140a mid range voltage PV AIO. $348 Maybe if I get some extra money I will try it out.
*https://www.ebay.com/itm/315194884064?_trkparms=amclksrc=ITM&aid=1110006&algo=HOMESPLICE.SIM&ao=1&asc=260258,260884&meid=a6fb758418c1406c8c0ae867c228eb84&pid=101875&rk=4&rkt=4&sd=305216357001&itm=315194884064&pmt=1&noa=0&pg=4429486&algv=SimplAMLv11WebTrimmedV3MskuWithLambda85KnnRecallV1V2V4ItemNrtInQueryAndCassiniVisualRankerAndBertRecallWithVMEV3CPCAutoWithCassiniEmbRecall&_trksid=p4429486.c101875.m1851&itmprp=cksum:315194884064a6fb758418c1406c8c0ae867c228eb84|enc:AQAIAAABYHD%2FO%2BVoFoPPIoZ2g0kOZxWd85mWuIHekSp3qag7zFfwObZeQoitzE%2FDCfcejfO%2BzOLmzZmy11RrgWpA56KM9DpasK%2BGtGYwCFvgaK6ijP5AqShEUhT8f2oX6hvndJ3G0oWH8DD1DlBWseQltpxcSDW2Uu52NrseaxeINpsrDP6vx7ny%2BkPKauMa3yeSanWiilaGfIcMFkc7ri2cYBNLV2fciR470PAgaQw--99prL4bibagWp9bNNxVP4sJRv5EFlOBRd9T3VZijznLdmIpgt35fjhN8%2F5Yh%2FzOZiKqzmrl7Y5nyNvPJwiVFEb%2BW%2FB%2BLxCgkGkT7sPYdwe7z170t5chMhcgvMRqrddSQplkd%2Ff5oHq2YNf4P0OSDrhLDVzsExobnLdpcu1EaaysZJCCKltF%2BxX2CJ5p7DBBixqBmRrSSib72mnaCD4FSOJ8fPgRhFUaEGyKEK2pmntT6j6hGtg%3D|ampidL_CLK|clp:4429486&itmmeta=01HRAAKKZCETC9YF372G9D1SVB
So much for that idea. I bought the last one!! So far it's working well - only been on a couple of days tho.