If you have ever had to reboot one frozen box in a full rack, you know the routine. Find the right cord, trace it back through the bundle, pull it, wait, plug it back in, and hope you grabbed the right one. A switched rack PDU gets rid of that whole process. Each outlet has its own switch, so you power cycle the one device that needs it and leave everything else running.
This guide covers what a switched PDU actually does, how much load a 30A 240V unit can really carry, and whether the Valiant Power 30A Switched 1U Rack PDU is the right fit for your rack.
What is a switched rack PDU?
A rack PDU (power distribution unit) takes one high-amperage feed and splits it across a row of outlets mounted in your rack. A basic PDU is just that: power in, power out. A switched PDU adds an on/off control for each outlet.
On our 30A switched unit, every one of the 10 IEC C13 outlets has its own physical switch on the front panel. Flip one off and only the device plugged into that outlet loses power. The other nine stay up.
Worth knowing up front: these are hands-on switches, not network-controlled outlets. If you need to reboot gear from another building, you want a remotely managed PDU. If someone can walk up to the rack, physical switches are simpler, cheaper, and there is no web interface to secure or firmware to keep updated.
Where a switched PDU earns its spot
- Mining racks. When one miner locks up or needs a reset, you shut off its outlet instead of unplugging a heavy C13 cord from a hot machine.
- Labs and test benches. Bring equipment up one at a time in the order you choose. That also keeps inrush current from every power supply hitting the circuit at once.
- Network closets. Cycle a switch, firewall, or access point controller without touching anything next to it.
- AV racks. Turn amplifiers and processors on in sequence and shut down gear that does not need to sit idle overnight.
How much can a 30A 240V PDU actually power?
This is the question that matters most, and it is where a lot of people overload a circuit.
A 30A breaker does not mean you get 30A all day. Under the National Electrical Code, continuous loads (anything running three hours or more, which describes almost everything in a rack) should stay at or below 80% of the breaker rating. On a 30A circuit that works out to 24A of continuous load.
| Supply voltage | Continuous load (24A) |
|---|---|
| 208V | about 4,990 watts |
| 240V | about 5,760 watts |
So before you plug in, add up the real draw of everything going on the strip. Use measured numbers or the nameplate on each power supply, not a guess. Ten outlets does not mean ten devices of any size. Ten 1U servers pulling 300W each fit comfortably. Two modern ASIC miners at 3,000W or more each will use most of the budget by themselves.
Specs at a glance
| Outlets | 10 x IEC C13, each individually switched |
| Input plug | NEMA L6-30P twist-lock |
| Voltage | 208 to 240V |
| Amperage | 30A |
| Cord length | 10 ft |
| Form factor | 1U, standard 19 inch rack |
| Housing | Metal |
| SKU | VP-PSW-30A-1U-8221 |
Why the L6-30P plug matters
The L6-30P is a twist-lock plug. You push it in and turn it, and it locks. It will not get bumped loose when someone is working in the back of the rack, which is the whole point on a 30A circuit. You will need a matching L6-30R receptacle on a dedicated 30A, 240V circuit. If the receptacle is a little out of reach, an L6-30P to L6-30R extension cord bridges the gap without swapping out the PDU cord.
C13 outlets: what plugs in
C13 is the standard socket for most servers, switches, storage arrays, and a lot of mining hardware. Your device will have a C14 inlet, so you connect it with a C13 to C14 power cord. If you have heavier equipment with a C20 inlet, it needs a C19 outlet, which this unit does not have. For a mix of both, look at our 30A metered PDU with 10 C13 and 2 C19 outlets.
Switched vs metered vs basic PDUs
- Basic: power distribution only. Fine when nothing ever needs to be cycled.
- Metered: shows the live load on the strip so you can see how close you are to the limit. Good for planning capacity.
- Switched: per-outlet on/off control. Good when you regularly need to reset or sequence individual devices.
Pick the switched unit if your main headache is power cycling individual gear. Pick a metered unit if your main worry is how much load is on the circuit.
Installation tips
- Have a licensed electrician confirm the circuit is a dedicated 30A, 240V run with an L6-30R receptacle.
- Mount the PDU in an open 1U slot where you can reach the switches. Front-facing is easiest if you plan to use them often.
- Turn all 10 outlet switches off before you plug the PDU into the wall.
- Plug in your equipment, then switch it on one outlet at a time.
- Label each outlet with the device it feeds. You will thank yourself the first time something locks up at 2 a.m.
Frequently asked questions
Can I plug a switched PDU into a regular wall outlet?
No. It uses an L6-30P plug, which needs a 30A, 240V L6-30R receptacle. A standard 120V household outlet will not accept it.
Does it work on 208V?
Yes. It is rated for 208 to 240V, so it works on the 208V circuits common in commercial buildings and data centers as well as standard 240V.
Can I control the outlets remotely?
No. The switches are physical, on the front of the unit. For remote control you need a network-managed PDU.
How many devices can I run on it?
As many as fit within about 24A of continuous load, up to 10 C13 devices. At 240V that is roughly 5,760 watts total. Add up the actual draw before connecting everything.
Will it fit my rack?
It is a 1U unit built for standard 19 inch racks, the size used by nearly all server and network racks.
Questions about whether this PDU fits your setup? Email us at support@valiantpowerco.com and tell us what you are powering. Or see the 30A Switched 1U Rack PDU.