Fusion 360 is required for parametric modeling. This can be adjusted to fit about any component that has atleast two mounting holes, the print doesnt require any hardware and its easily mounted and dismounted to DIN rails. If the design has 4 mounting holes you can print two identical DIN mounts, one for each side.
The design has only four parameters that need to be adjusted:
Once all parameters have been set, just export mesh and print
Printing
3 layers and atleast 35% infill should be more than enough for small parts, if mounting heavier objects increase as desired.
The author hasn't provided the model origin yet.