Dinkle White DK2.5N-WE DIN Rail Terminal Block Screw Type UL 600V 20A 12-22AWG, Pack of 100

Affordable and hold up well. The larger brands (ABB, Phoenix Contact...) cost a lot more and don't seem to add anything for it. Make sure you get a flat tip cabinet screwdriver if you're buying the screwed contacts like me.

Use these in wire harness in gate operators. I have many colors to date - makes install much easier. For 12 or 10 gauge wire I suggest the 4 size connector. The 2.5 are great for 18ga that we use.