Power. Plugs. Management. Mounting.
A practical framework for selecting the right power distribution unit for the load, outlets, monitoring needs and rack location.
The Short Version
- Power — Confirm available input power (voltage, phase, amperage, connector).
- Plugs — Match the outlets to the equipment plugs and the quantity you need.
- Management — Decide whether you need basic, metered, monitored, or switched capability.
- Mounting — Confirm vertical/horizontal orientation, rack units or zero-U space, and depth clearance.
PDU Rule of Four
Power. Plugs. Management. Mounting.
- Power — What electricity is available?
- Plugs — What goes in and what comes out?
- Management — What must the PDU monitor or control?
- Mounting — Where does the PDU physically live?
Work the four points in order. Skipping ahead usually creates a return.
Putting the decisions together
Once the four points are answered, filter catalogue options by input power and form factor, then match outlet configuration, then decide on management level. If any of the four answers is still unknown, gather the missing information before purchasing.