DC 5521 Power Splitter 1 Female 6 Way
A dc 5521 6 way splitter fans one 5.5 x 2.1 mm female input into six male barrel outputs with roughly 40 cm legs, built for racks, cabinets and camera arrays. Custom length and polarity.
Overview
A dc 5521 6 way splitter is one female 5.5 x 2.1 mm input fanned out to six male barrel plugs on roughly 40 cm legs. The short legs are deliberate: this is a distribution part that lives inside a rack, a cabinet or a camera enclosure, not a long-run extension. Keeping each leg at about 40 cm keeps the voltage drop per leg low, keeps the bundle manageable, and stops the installer from coiling a meter of slack behind every device. All six outputs are wired in parallel across the input, so the input leg carries the sum of all six loads. Polarity is center positive as standard and the conductor size is set from your drawing.
Key Specifications
| Connector A | DC 5.5 x 2.1 mm female socket (1x) |
|---|---|
| Connector B | DC 5.5 x 2.1 mm male plug (6x) |
| Splitter Type | 1 female to 6 male (6 way) |
| Cable Length | Approx. 40 cm (15.7 in) hub-to-plug |
| Jacket | Black PVC |
| Polarity | Center positive (standard) |
| Conductor | Stranded copper, size stated per your drawing |
| Junction | Molded PVC body with strain-relief boots on each leg |
| Application | CCTV, LED, router, low-voltage DC distribution |
Two ways, five ways, six ways or eight: how many do you need?
Splitter count is usually chosen by counting devices, which is the wrong starting point. What matters is how much of the supply rating you consume and how much slack the installation needs. The table below is a selection guide, not an electrical limit.
| Ways | Typical installation | Why you would pick it | Watch out for |
|---|---|---|---|
| 2 way | One supply feeding two adjacent cameras or a camera and an injector | Minimal bulk; fits inside a small junction box | No spare capacity if a device is added later |
| 4 way | A small rack shelf or a four-camera corner of a building | Matches the common four-camera NVR bundle | Input conductor still has to carry the total |
| 6 way | A full camera array, an LED zone, or a populated equipment shelf | Covers a standard 8-channel NVR with room for two spares | Add up the draw; six cameras with heaters is not six cameras idle |
| 8 way, fused | Distribution where a single fault must not drop the bus | Per-leg protection isolates a shorted device | More bulk at the junction and a higher part cost |
Where a shorted load would take down cameras you cannot afford to lose, the 8-Way Fused DC Splitter Cable is the right answer even if you only need six legs, and you simply leave two unused.
The input leg is the part everyone under-sizes
Six loads at the outputs means six times the current through one input connector and one short piece of cable. Every amp through that conductor costs you voltage, which is why voltage drop is the thing to measure rather than to estimate. The barrel contact in the input socket and the conductor feeding it are the two things that set the ceiling. When that ceiling is exceeded the failure is not dramatic: the contact warms, the plastic around it softens, the grip relaxes, resistance rises, and eventually the socket discolors and the supply browns out. Size the input for the total, not for one device.
- Add the nameplate current of all six loads, including heaters and IR illuminators that only run at night.
- Size the input conductor for that total, not for a single leg.
- Leave headroom on the supply. A unit run at its rating has no margin for summer heat or inrush at switch-on.
- Measure at the furthest plug under full load. That reading is the number that matters, not the supply label.
Fitting a six-leg harness into a rack or cabinet
Short legs are an advantage only if the junction sits in the right place. Mount the molded body at the point where the supply enters the cabinet, dress the legs so they do not cross the airflow path, and leave a service loop at the input rather than at each output. Where the panel is crowded, ask for legs cut to different lengths so the plugs land where the jacks are instead of leaving six coils of slack. A right-angle plug on the tightest positions removes the bend radius from the depth budget, which our DC 4017 Right Angle Power Cable range covers for the smaller barrel family.
Where a dc 5521 6 way splitter earns its keep
- Eight-channel CCTV installations where six or seven cameras share one supply
- Under-cabinet and display lighting where one driver feeds several fixture runs
- Rack shelves holding routers, switches and small gateways that all run on 12 V
- Test benches and burn-in racks where several units share a bench supply
- Retrofit work where replacing six wall adapters with one supply is the whole point
- Battery-backed installations paired with our Mini UPS Splitter Cable so the bus stays up through a mains event
What to send with the inquiry
- Number of legs and whether any should be a different length.
- Total current across all loads, and the heaviest single load.
- Conductor size for the input and the legs, or the drop you can accept.
- Plug style – straight on all legs, or right-angle on some.
- Polarity, flagging any load that is reversed.
- Quantity and whether this is a prototype or production order.
Workmanship and testing
For DC 5521 Power Splitter builds the line runs to IPC/WHMA-A-620 Class 3 under ISO 9001, terminating 32 to 12 AWG. Each DC unit passes a continuity and pinout check before it ships, and seal checking is quoted whenever an ingress rating is on the drawing.
Material declarations against RoHS and REACH are issued per project, alongside the dimensional and electrical reports agreed at quotation; see certifications, compliance and material declarations. Where your drawing names a UL style or another approval, the build follows your drawing and ships with the supporting document rather than a claim of our own. Termination, molding and verification happen in-house see the assembly lines behind this build so the process that made your sample is the process that runs the order. The wider context is covered under cable assemblies for marine and outdoor equipment. Tooling for this build is cut in our own tool room and belongs to your program, so a repeat run years later starts from the same tool.
Custom builds and ordering
DC 5521 Power Splitter prototype lots start from 1 to 50 pcs and ship in 3 working days. Production requires 500 pcs and runs 14 working days after approval. Tooling not already held adds around 10 working days. Private-label DC runs ship under your part number and labeling, and we provide material certificates and first-article reports when asked.
Related DC distribution hardware
- DC 5521 Power Splitter 1 Female 2 Way
- Fused 12V Distribution Harness, Anderson Powerpole
- COB LED Power Injection Cable DC 5.5×2.1mm Male
- 14 AWG DC Barrel Pigtail Cable 5.5×2.1mm to Bare Wire
- Reverse Polarity DC 5521 Power Cable
- DC 5525 Female to Male Adapter Cable
Full ranges: DC plug power cable and custom wire harnesses.
Frequently Asked Questions
Can the legs be different lengths?
Yes. Give us the hub-to-plug measurement for each leg and they are cut individually. It is the single most useful thing you can specify for a crowded cabinet.
Is 40 cm fixed?
No, it is the stock length that suits most rack and cabinet work. Longer legs are built on request; just remember that drop grows with length and the conductor may need to go up.
What if one of my devices is center negative?
Tell us at the inquiry stage. We can build that leg reversed, or you can use an isolated supply for it. Do not force a reversed plug onto a shared bus.
Can you add a fuse per leg?
Yes, and for six loads it is usually worth it. The fused version means a faulted device drops itself instead of taking the other five down with it.
| Connector A | DC 5.5 x 2.1 mm female socket (1x) |
|---|---|
| Connector B | DC 5.5 x 2.1 mm male plug (6x) |
| Splitter Type | 1 female to 6 male (6 way) |
| Cable Length | Approx. 40 cm (15.7 in) hub-to-plug |
| Jacket | Black PVC |
| Polarity | Center positive (standard) |
| Application | CCTV, LED, router, low-voltage DC distribution |
| Conductor | Stranded copper, size stated per your drawing |
| Junction | Molded PVC body with strain-relief boots on each leg |
Related products
DC Barrel Adapter Kit – 5521 / 5525 / 4017 / 3513 / 1.35mm / 2.5mm, 6-Piece
A dc barrel adapter kit covering 5.5x2.1, 5.5x2.5, 4.0x1.7, 3.5x1.35 and 2.5 mm in six molded female-to-male adapters, so one supply covers a mixed estate. Center positive throughout, with nickel-plated brass contacts. Measure the socket pin with a caliper before ordering: the outer shell is identical across three of these five sizes. Bagged with a size card, or boxed with a printed insert.

