When I built my Prusa I decided to use a Mean Well PSU instead of the stock one, so I custom designed a case to fit the mk3 frame.

• Compatible with Mean Well RSP 320-24 and LRS-350-24
• Warning the project requires the connection of parts with dangerous voltages, caution is recommended. I am not responsible for any damage to people or things
• Pay close attention that when closing the front part no wires are crushed or that live parts do not come into contact with other components given the confined spaces

Material used:

• AC Power Connectors PF0001/63 (Recommended):

https://www.digikey.com/en/products/detail/bulgin/PF0001-63/1980687?s=N4IgTCBcDaIAoDEAMKCMB6AbAZhAXQF8g

https://www.digikey.it/it/products/detail/bulgin/PF0001-63/1980687?s=N4IgTCBcDaIAoDEAMKCMB6AbAZhAXQF8g

https://it.rs-online.com/web/p/connettori-iec/0815830/

Alternative Aliexpress: https://it.aliexpress.com/item/4000469723664.html?spm=a2g0o.order_list.0.0.33603696rtR0sm&gatewayAdapt=glo2ita

(Model AC-02)

• Switch Bulgin C1300ALAAA (Recommended):

https://www.digikey.com/en/products/detail/bulgin/C1300ALAAA/9598359

https://www.digikey.it/it/products/detail/bulgin/C1300ALAAA/9598359

https://it.rs-online.com/web/p/products/2789733/

Alternative Amazon: https://www.amazon.com/Heyiarbeit-Rocker-Position-Household-Appliances/dp/B09DGG5W4S/ref=sr_1_19?crid=EBAKUVIVNL7U&keywords=ON-OFF+2+Posizione+SPST+2+Pin+Snap+in+Rocker+Switch+16A+%2F+20A+250V+%2F+125V+AC+Nero+5+Pack&qid=1669456335&sprefix=on-off+2+posizione+spst+2+pin+snap+in+rocker+switch+16a+%2F+20a+250v+%2F+125v+ac+nero+5+pack%2Caps%2C171&sr=8-19

https://www.amazon.it/gp/product/B00WJLF8OQ/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

• Recommended power cable 90°:

https://www.amazon.com/Hosa-PWC-141R-Right-Angle-5-15P/dp/B004NCRDYW/ref=sr_1_12?crid=3072E5IBP1LUS&keywords=Lindy+iec&qid=1669468577&sprefix=lindy+iec%2Caps%2C205&sr=8-12

https://www.amazon.it/gp/product/B0058H0XGQ/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

• Electric connections:

1mm /1.5mm (AWG16) wire is recommended for power connections

Below are the types of connectors that I used, I preferred to use the eyelet terminals rather than the spade ones for the power connections

https://www.amazon.it/gp/product/B07C924N5R/ref=ox_sc_act_title_3?smid=A1ZJKGYC1NCLC9&psc=1

https://www.amazon.it/gp/product/B096M6GXKL/ref=ox_sc_act_title_1?smid=A1TTJUEIJVSHLP&th=1

• Crimping Tool

https://www.amazon.com/Crimping-Tool-Insulated-Electrical-Connectors/dp/B07GFLWKTT/ref=sr_1_2_sspa?crid=14N5ZWZSI9FDE&keywords=crimping+pliers&qid=1669467158&sprefix=crimping+pliers%2Caps%2C232&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyVUFFQk1WTTNKSFFQJmVuY3J5cHRlZElkPUEwOTQyODA4NU9DTzFaTVQ0NDBVJmVuY3J5cHRlZEFkSWQ9QTA1NTU3NzMxTEJUNjU2RUZGN1FQJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

https://www.amazon.it/Pinza-Crimpatrice-Connettori-Elettrici-Isolanti/dp/B07GFLWKTT/ref=sr_1_1_sspa?__mk_it_IT=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=2B4ZA8LAPGI14&keywords=pinza+capicorda&qid=1669467246&qu=eyJxc2MiOiI2LjQ2IiwicXNhIjoiNi4xOCIsInFzcCI6IjUuNTEifQ%3D%3D&sprefix=pinza+capicorda%2Caps%2C126&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1