Hello JAD700,
Below is a list of “Shunts, Jumpers” (busbars) that we do carry for your reference, it looks like 20A is the highest, and much shorter length:
https://www.digikey.com/en/products/filter/shunts-jumpers/304?s=N4IgjCBcoGw1oDGUBmBDANgZwKYBoQB7KAbXABYAmABnIE4QBdAgBwBcoQBlNgJwEsAdgHMQAXwlA
However, we do have some bare wire that can be formed to act as a bus bar. There are a few inconsistencies currently with our website filtering. If you are searching bare wire, you can select “Jacket Color” to be “None (Non-Insulated)” such like below link:
(Non-Insulated) Single Conductor Cables (Hook-Up Wire) - Filtering by “Jacket Color”
-Or you can select “Jacket (Insulation) Material” to be “No Jacketing - Bare Wire” per below link. Currently, both yield different results.
Single Conductor Cables (Hook-Up Wire) - Filtering by “Jacket Material”
We do have some of the actual busbars like 0280300000
They are listed under terminal block accessories.
https://www.digikey.com/en/products/filter/terminal-blocks-accessories/309
The other option could be using a barrier block with a jumper if that would work better.