I FOUND IT I FOUND IT I FOUND IT!!!
I've been looking for hours for a disconnect switch for my 48V system, Schneider, Mouser, AB, Digikey, McMaster-Carr, youtube and forums.... same issues as everyone here, my 48V system will operate a bit above 48V and really would like to respect mfg ratings...
Guys, at least as of today Victron sells a switch for 48V systems rated to switching under load 60V, check out my full post here: https://diysolarforum.com/threads/battery-disconnect-for-nominal-48v-systems.32915/post-1006489