A good friend was looking for a mounting for his Shelly relay in the sub-distribution board. The requirement was to route the cables downwards and the clip for the DIN rail should be able to be opened at the bottom. The load should therefore hang from the upper notch as a rigid element.
As there was no suitable solution after a long search, I quickly constructed something myself. There is a recess on the front for labelling with an 18 mm tape.

2025-01-23 Update:

Added the mount for the Shelly EM module as well. Thanks to Bastiaan Nelissen for the idea and testing the design. Additional pictures are also provided by Bastiaan.