a 50 amp switch can run UP TO 50 amps without a problem.. so 5, 10, 20 amps... thats all fine... anything over 50 amps is too much for the contacts... in this case, if you need more than 50 amps on one switch, you can use the switch to run a relay or 2... that will handle the higher amperage.

As far as the switch box/panel goes... I can built it for the cost of materials... I like doing things like that and I wouldnt feel right charging to do it. You just have to let me know how you want it (box or panel) where you're gonna mount it (dimensions of area) and what switches you'd want... Im not seeing any switches at select products... besides, if they have them they are probably overpriced and can be found else where for less. (select products prices are a little high)

I am wondering, what are these switches going to control?? 50 amps on one switch in a car is a lot. My fathers dump truck uses 50 amp switches!