Quote Originally Posted by ngwagwa View Post

DIN rail connectors are not the easiest thing to get the end of a wire in.
One good reason why some of us use crimp-on ferrules! They make putting wires into DIN connectors and other difficult-to-reach places a whole lot easier, and less chance of odd strands shorting out on adjacent terminals. I used them for the first time wiring my own control box and I'm a convert. Other people reckon they don't make as reliable a long-term connection but I'm not sure I could have managed to get wires into all the connectors in my box without them.