This DIN rail clip has a pull tab to release it from the rail. A flathead screwdriver or Allen wrench can be used to pry/hook and pull the tab.
Spacing between holes is 31mm.
Triangle symbol on the clip shows correct orientation with the mount.
Required parts:
DISCLAIMER: This model has very tight tolerances around the release tab, make sure your printer is well-calibrated to have a fully functional print.
Print settings:
The author remixed this model.
The main goal was to reduce its height as much as possible. Due to its low height, the locking mechanism had to be completely redesigned not sacrificing its rigidity. Props to original the creator for making a very good design.