In case you got tired of waiting, Wago’s 221-series lever nut wiring connectors are now available. They’ve been available in limited numbers for a few months, but by now they’ve become a lot easier to find.
The current rating on these is 20A.
Wago 222 connectors are larger, they have smaller levers that some consider harder to open but also harder to accidentally open, a wider wire gauge range, and they are a hair less expensive.
The 221 connectors are smaller, and they have a transparent section.
I was fine with my 222 connectors, especially since 221 connectors have been somewhat hard to find, but new mounting plates for the 221 connectors just came out and look to be easier to use than those for the 222 series. Instead of having to load fasteners from the side, blocking middle sections in and hampering changes, you should be able to load 221 connectors from the front. This is of course of no consequence for anyone who just wants to mount the connectors loose in enclosure or junction box.
They’re available on Amazon, but if you plan on ordering a large quantity, check out Newark Element 14 or Future Electronics. I’ve ordered most of my Wago connectors through Amazon vendors in the past.