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Two black cylindrical DC barrel connectors with female 5.5mm x 2.1mm ports on each end

WRIARICH

WRIARICH 5.5mm x 2.1mm Female to Female DC Barrel Connector 2pcs

SKU CH-DNAN-XJR06

Two 5.5 mm × 2.1 mm female DC barrel couplers join cables without cutting or splicing

  • ColorBlack
  • Standards/CertificationsUL Listed
  • UL Listed for safety compliance
  • Connects two 5.5 x 2.1 mm cables without soldering
  • Extends existing DC power runs with a 5521 coupler
  • Compact plug-and-play design fits tight spaces
  • Two adapters included for multiple connections

What this adapter connects

This pair of DC barrel couplers joins two 5.5 mm x 2.1 mm male plugs without cutting or splicing wires. The 5521 size matches common CCTV cameras, LED strips, routers and similar low-voltage gear. Each coupler is UL Listed and supplied as a two-piece pack. Buyers who need a different tip diameter or a male-to-female gender change cannot use this item.

Thermals noise and power draw

The connectors are passive metal-and-plastic parts that add no measurable heat, noise or power consumption to the circuit. They simply pass whatever current the attached supply and device negotiate. No fan, heatsink or active circuitry is present, so thermal behaviour depends entirely on the connected equipment.

Build quality and daily use

Black moulded housings with gold-plated contacts resist oxidation and survive repeated mating cycles. The compact form factor keeps cable runs tidy behind monitors, inside enclosures or along skirting boards. Two units in the pack allow one to stay installed while the other serves as a spare or a second extension point.

Highlights

  • UL Listed for safety compliance
  • Connects two 5.5 x 2.1 mm cables without soldering
  • Extends existing DC power runs with a 5521 coupler
  • Compact plug-and-play design fits tight spaces
  • Two adapters included for multiple connections

Specifications

ColorBlack
Standards/CertificationsUL Listed

Questions about this item

How do I install the 5.5mm x 2.1mm female-to-female barrel coupler without cutting or splicing wires?

Align the male 5.5mm x 2.1mm plugs from your power supply and extension cable, then push each firmly into the female jacks until they seat fully; the step often missed is verifying the tip polarity matches before applying power.

What maintenance or replacement will the UL Listed 5521 coupler need over time?

Inspect the jack interiors periodically for dust, corrosion or bent centre pins; if contact resistance rises or the plug feels loose, replace the coupler — no internal parts are user-serviceable.

What is the first limit that appears when the 5.5mm x 2.1mm adapter runs under sustained load?

The connector body can warm up if the connected devices draw high current through the 2.1mm centre pin; excessive heat or intermittent power signals the thermal limit of the contact interface.

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