August 18, 2025
Description
This is an enclosure box I designed for Meanwell 15W and 25W Switching Power supplies. Meanwell 15W power supplies have the marking starting with RS-15- followed by output voltage, so: RS-15-3.3 for 3.3Volts, RS-15-5 for 5Volts and so on. Similarly, Meanwell 25W power supplies have the marking starting with RS-25- followed by the voltage output.
I tested this design with Meanwell 5V Switching Power Supplies RS-15-5 and RS-25-5. Other Meanwell models with same power and different voltages looks to have same identical dimensions, at least from technical papers, so check dimensions first than print.
My advice is to print the enclosure using PETG or a more heat and shock-resistant filament since PSU can overheat.
⚠️ WARNING ⚠️
This project is for experts since involves working with dangerous voltages. The box is not suitable for the external use
After the print you need to insert an M3 brass insert in the hole on top of the enclosure:
The Lid must slide in the box grooves:
and then you can block the lid using an M3 countersunk screw having a length of threaded part from 3 to 10mm.
Optionally you can firmly attach the PSU to the box using 2x M3 countersunk having the length of threaded part of 3 or 4mm.
⚠️ WARNING ⚠️
Threaded part of screws used for attaching PSU must not have the threaded part more than 4mm or you'll damage the PSU!
Using screws on PSU chassis requires the PSU grounding! So you must compulsorily attach the yellow/green wire from the power cord to the grounding screw of the PSU!
Holes have a different placement depending on the PSU model: top hole is slotted since the 25W and 15W have a slightly different hole position:
Required parts (other than filament and PSU):
If you're printing this box you perfectly know how to connect wires!
License:
Standard Digital File License
CyB3rn0id
