HELP! Compressor now trips breaker on start up??

Here in the US the black wire is the ;hot; side and the "white" is the neutral side. Mack sure you didn't get them reversed.

It's the same here...that's how I have it wired.

I will be checking the capacitors tomorrow and replacing them if needed. Hopefully that is what the problem is. I cannot find a switch larger than 20 amps. It did the same thing with a 30 amp breaker.