This is a 3D model of the case with electronic components assembly.
Button - should be printed with different color of filament - prefered blue
Spacer - this part keeps proper space between boards. You have to choose spacer for specific output board.
Clips - you need 2 of them - the tighten the mounting to the DIN rail
You need a 3D printer with the bed that has at least 27cm in the longest side. For example Creality Ender 5 Plus.
Prefered material is: PET-G - it is pretty easy to print and it is more resistant to temperature than PLA.
There are two different methods of printing the front case:
Other parts of the case are not so visible so it is not so important how to print them.
Below you can find timelapse of printint the front part of the case:
Avoid plugging boards without a case. The case has been specifically designed so as not to allow the boards to be inserted incorrectly.
Be very careful when connecting individual boards and avoid to shift the pins in the connectors - it can lead to a permanent damage to the electronic components.
Follow the instructions in this video to assemble the case with the boards.
Heat dissipation test was made with Relay Board 24x16A, with all the relays turned on without any load attached. Photos were made after about 24 hours, when the temperature has stabilized.