1U multifunction PDU for 10 inch rack

1U 10-inch Multifunction Rack Shelf

This is a custom 1U utility shelf designed for 10-inch homelab racks. It consolidates power distribution, UPS backup, and cooling management into a single unit, eliminating cable clutter and "power brick" mess.

Features:

• AC Power & Filtering:

  • uses IEC C13/C14 standards to avoid Italian/EU plug inconsistencies

  • integrated EMI filter to protect sensitive gear from line noise (essential if you have threadmills or other noisy appliances on the same circuit)

  • master AC switch and 2 outputs

• 12V DC PSU/UPS System:

  • centralized 12V power supply for switches and internal gear

  • UPS functionality using repurposed power bank battery cells to keep the network alive during short blackouts

• 4-Port 12V DC PDU:

  • 4x Front-facing DC jacks for external devices (ONT, AP, Media Converters)

  • internal terminal block for "hidden" wiring inside the rack

  • dedicated toggle switch for the DC rail

• Manual Fan Control:

  • integrated PWM fan controller with a front-panel knob

  • designed for back-to-front airflow setups

DISCLAIMER & SAFETY WARNING

Wiring this project involves working with 220V AC mains power, which can be LETHAL.

For safety and liability reasons, I do not provide a detailed wiring diagram. This project is intended strictly for expert users who have a solid understanding of electrical safety, proper grounding, and AC/DC circuits.

If you choose to build this, you do so at your own risk. Ensure all connections are properly crimped, insulated, and tested. Always disconnect power before servicing and use a multimeter to verify your work.

Slicing notes:

The provided .3mf file contains two models. The one named "rack" is the design itself, the one named named "mesh" can be set as a modifier (with no top/bottom layers) in the slicer to get the perforation pattern in the front as shown in the photos.

Hardware used:

• IEC C13 outlet

• IEC C14 filtered inlet

  

• 12V PSU Module

  

• 2S BMS / 12V UPS Module

  

• manual PWM Fan Controller

  

• DC 5.5x2.5mm sockets

• 4pin rocker switch

• 2pin rocker switch

• Power Distribution Board for model trains

  

• AC power distribution block

  

• 17x M3x6mm countersunk screws

• 2x M3x8mm cap screws

• 2x M3 threaded inserts

• 2x M3 nuts

• wire

• 15x female spade connector

• 3x piggyback spade connector

• 1x wire with 3pin jst-vh wire

Note: This documentation was refined with the assistance of AI (Gemini) to ensure clarity and technical accuracy in English.