This is an adapter to use Shelly Mini 1 Gen3 in a power distribution box.
In order to make wiring easier, you can glue 2 Wagos 221-415 on top and bottom.
Use one of them for the supply side (you want to wire a motion detector too), the other one for wiring multiple lamps.
The design makes it possible to use one slot instead of a circuit breaker. It might be a tight fit on the DIN-Rail, you might have to rework it a bit.
The design is inspired by @therold_232324
On the front-side you can use 12x40 labels.
The author marked this model as their own original creation.