With self resetting breakers it is more difficult to troubleshoot if you have a problem. My track has manual reset breakers at the driver's stations, they are the sort with a white button that pops up when the breaker gets tripped. You can see at a glance if the breaker has tripped. Most of the time the breaker would be tripped because a controller was hooked up wrong, otherwise there would have to be a short someplace. It really is not a bad idea to use connectors that can't get hooked up wrong or short out, all of the 1/32nd tracks that I run on have XLR connectors. If you must use screw post connectors they should be at least 1 1/4 inch apart and the best order would be Red, Black, White so that Red could not get shorted to White.
If you have a large power supply do not count on its fuse or protective circuits to save your track, wiring or controller. I watched an expensive custom built HO track burn up when someone hooked up wrong with a car already on the track. That track did not have breakers or fuses at the driver's stations. It is always best to have a fuse or breaker for each lane.