Riden/Vislone 3x Laboratory Power Supply Flat & Flexible for Pegboards

I have been looking for a long time for a triple laboratory power supply (meaning: being able to set three different output voltages) that is not deep, but flat, so that it can be mounted on the wall or (as in this case) on a pegboard to save space. It is designed so that all 4 units can be connected to each other with cables. While the power supply unit can remain hanging on the wall, the individual lab units can be removed and placed on the table so that they are closer to hand. 

LABORATORY UNIT:

For the laboratory unit I chose the RIDEN/VISLONE RD6018 18A:

https://www.amazon.de/VISLONE-Labor-Stromversorgungen-Konstantspannung-Gleichstromversorgungsmodul-Steuerspannungsmesser/dp/B08NT3BWLD 

I adopted the laboratory units' design from depeje's model (thingiverse) - many thanks for the excellent work! They have been slightly adapted in many places so that they fit better in place. In particular, an output for a Wago snap-in socket was added so that the three laboratory units can be flexibly connected to the main power supply unit. Also, they now have a storage tray on the top, which is designed to fit perfectly into the feet of the second/third laboratory unit. This means that the units can be stacked perfectly on top of each other and all three together are the same size as the power supply unit. Finally, it now has holes for to be mounted on pegboaoards with Ø7 mm hole and 25.4 mm / 1 inch hole spacing.

POWER SUPPLY:

The housing is designed so that the front and back of the power supply unit freely are exposed to the outside to ensure ideal heat dissipation. Fresh air reaches the top from below through the slots in the power supply unit. To ensure the air supply is not obstructed when the power supply unit is placed on a table, the power supply unit stands on a slightly inclined base. Since the model is slightly too large for most printing volumes, i split the model in two parts. Use glue generously in the overlapping connection shackles.

I opted for the following power supply unit from AMPUL, as it already has built-in overload protection, overvoltage protection and short-circuit protection - and because its black:

https://www.ampul.eu/de/schaltnetzteile/2328-stromversorgung-60v-25a-1500w 

To be even safer, I use this version with a built-in fuse as the socket for the 230V connection. The built-in fuse is slightly too high for the power supply unit. To be even safer, you can install another one here:

https://www.amazon.de/dp/B07T5D39R3 

I created the model so that there are reinforcing elements around the plugs that can be printed with 100% infill. In the 3mf file, I have already set this up. This also applies to the edges of the screw inserts for fastening the power supply unit: A 100% infill is set around the M4 brass screw inserts in the 3mf file. The brass inserts I used are the following:

https://www.amazon.de/gp/product/B08K1BVGN9/ 

https://www.amazon.de/gp/product/B09BMK4BK1/ 

I routed the status LED of the power supply unit to the outside of the housing via the following light guide - drilled pragmatically to my desired position with a 4 mm drill :)

 https://www.reichelt.de/lichtleiter-smd-1-fach-2-2-mm-sphaerisch-flexibel-men-12161002-p232128.html?&nbc=1 

CABLES:

For the cables, I opted for the practical snap-in plugs and sockets from WAGO (item no. 770-703 and 770-713). CAUTION: These are used in industry as 230V plugs! Use at your own risk. They are convenient for private use for me, as these plugs don't normally exist in a normal household and they can be locked so that the cable does not always come loose. They should also provide enough current to transport the 18A current. But again: Use at your own risk. I have not tested it at maximum current with the installed power supply unit. 

Here the links to the WAGO plugs and sockets:

https://www.wago.com/de/steckverbinder/snap-in-stecker/p/770-713
https://www.wago.com/de/steckverbinder/snap-in-buchse/p/770-703 

The plugs also have two cable outputs in the version I linked - you can therefore also connect all three lab units to one cable in series if you wish. This way, theoretically, you can connect as many lab units as you like and are only limited by the maximum power of the power supply unit.

I use 2.5mm² cables as the connecting cable so that the cross-section is large enough for the current.  This cross-section calculator https://www.omnicalculator.com/physics/dc-wire-size gives a cross-section of 2.08mm² - so 2.5 mm² should be fine. I used the following cable, but it has 3 cores, although 2 would be sufficient in this case:

https://www.amazon.de/gp/product/B09ZQRH1PB/