thirtydaZe wrote:
... can i just place all the cables onto 1 end of the disconnect, and then wire a single hot wire from battery to the other end of the switch?
As others have said; What you are proposing is fine... as long as you don't exceed the switch's continuous current rating.
I have a similar switch (shown just above 115Vac outlet in photo below) that is manufactured by Hella and it is rated at 50A continuous and 1000A for 10 seconds. I use it to disconnect the
positive cable between my chassis & coach batteries. Mine sees 40A continuous and 100A for a minute or two, and has been trouble free.
I'll add that I go through some effort to avoid opening or closing my battery disconnects under load. This prevents arcing and pitting of the contacts... something to consider if you have any high-current accessories (e.g. inverter) in your system.

Cheers,
-Mark