I used the OMRON G4A-1A-E. This is a 20A 250VAC relay. In the schematic I also added a snubber circuit which prevents sparks between the contacts. Mainly for prevent electronic interference when switching motors. But to be honest, 20A is a lot, and I would stay well below that. If you really want to switch that high amperages I would switch a big contactor switch with it.
This is the datasheet: https://nl.mouser.com/datasheet/2/307/omron_g4arelay-1189816.pdf
I’ll probably make a web form where you can choose the options you like.