Wow, that's AWESOME thanks for the tip on these!!!One of the best things about them was the mounting carrier, part number 221-500. It can hold several lever-nuts and can be mounted in three different ways using small screws or DIN-35 rail. It makes a great way to organize and add to circuits.
Also Tesota your thorough followup on this is much appreciated. Regarding the testing, did the SPLICING connectors (such as 221 series) also pass these tests? Just curious, although the anecdotal evidence presented in this thread leads me to believe they are adequate for our uses.