Prusa MK3 MeanWell RSP-320-24 PSU Cover for Solid State Relay

thingiverse

**CAUTION**: *This project involves working with mains electrical wiring and requires proper equipment for cutting, crimping, etc. Don't attempt it if you're not comfortable or equipped.* This is a modified version of [astromech8037's](https://www.thingiverse.com/astromech8037/about) MeanWell RSP-320 cover designed for the Prusa MK3. Full credit goes to astromech8037 for the original design. The cover has been expanded to fit a solid-state relay, power panic board, and switch inside, ensuring no mains wires are exposed. I've also extended the cable outlet for extra space for external controller cables. Using a solid-state relay allows remote printer control through an external controller (I use the [PSU Control](https://plugins.octoprint.org/plugins/psucontrol/) plugin with Octoprint and a Raspberry Pi 3B+). The [Fotek SSR-25 DA](https://www.amazon.co.uk/gp/product/B01K9GN93E/ref=ppx_yo_dt_b_asin_title_o07__o00_s00?ie=UTF8&psc=1) solid-state relay controls the mains voltage input into the PSU. I haven't tested other relay modules for fitment. For assembly instructions and required hardware, refer to this [post](https://shop.prusa3d.com/forum/user-mods-octoprint-enclosures-nozzles--f65/alternate-power-supply-meanwell-rsp-320-24-t15707.html) on the Prusa Forums by jonathan.r14. The "bracket" design ensures the top hex nut pocket is enclosed, allowing proper bridging over gaps. Make a hole for an M4 bolt to secure it properly. **Update 19/01/2019**: The housing has been adjusted so bolt holes align with base tabs correctly.