RJ Adapters, Couplers & Extensions

RJ (registered jack) adapters are devices used to convert registered jack connections from one type to another. RJ25 connectors are a standardised connection used in telecommunications applications.

What are RJ adapters used for?

RJ adapters can cover a range of purposes, depending on what type of adapter they are.

  • Couplers join two different connectors together, using two input ports
  • Extensions increase the range of transmission by adding to the length of cable
  • Adapters proper allow different connections to be joined, such as an M12 cable joining to an RJ45 connection

Types of RJ adapters

RJ adapters mainly differ in how many ports they have. They may have between one and six ports, allowing them to connect up to six cables. They can also differ in their wiring configuration, and indeed there are many different types of adapters, from feedthrough connectors to junction boxes to couplers, depending on what you need to convert between. They can be shielded or unshielded.


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Viewing 1 - 20 of 172 products
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Description Price Type Interface Type LAN Category Number of Ports Shield Type Wiring Configuration Length Width Depth Diameter Extension Length Series Series Number Voltage Rating
RS Stock No. 186-3048
BrandRS PRO
€4.24
Each
units
Coupler RJ45 Cat3 - UTP Straight Through 22.02mm 16mm 37.3mm - - - - -
RS Stock No. 340-9630
BrandRS PRO
€4.72
Each
units
Coupler RJ45 Female Cat5 - STP Straight Through 25mm 25mm 45mm - - - - -
RS Stock No. 741-7326
Mfr. Part No.IE-FCM-RJ45-C -1018790000
BrandWeidmuller
€30.93
Each
units
Coupler RJ45 Cat6a 2 STP - - - 34.7mm 30mm - - - -
RS Stock No. 821-2936
Mfr. Part No.MH3101-CAT6
€4.69
Each
units
Coupler RJ45 Cat6 1 UTP - 16.6mm 16.2mm 29.8mm - - MH3101 MH3101-CAT6 -
RS Stock No. 333-6649
Mfr. Part No.DBFB8812
€22.50
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 2 Shielded - - - - - 250 mm - - -
RS Stock No. 619-5479
Mfr. Part No.PX0839/PC
BrandBulgin
€7.54
Each
units
Coupler RJ45 Cat5e 1 - - - - 45mm 35.7mm - Buccaneer - -
RS Stock No. 314-8155
BrandRS PRO
€5.65
Each
units
Adapter RJ45 Female, 9 Way D-sub Female - - - - 16mm 33mm 50mm - - - - -
RS Stock No. 818-700
BrandRS PRO
€3.14
Each
units
Adapter RJ45, 9 Way D-sub Female - 1 Unshielded - 15mm 33mm 49.5mm - - - - -
RS Stock No. 818-665
BrandRS PRO
€3.14
Each
units
Adapter RJ11, 9 Way D-sub Female - - Unshielded - 15mm 33mm 49.5mm - - - - -
RS Stock No. 818-693
BrandRS PRO
€3.14
Each
units
Adapter RJ45, 9 Way D-sub Male - 1 Unshielded - 15mm 33mm 49.5mm - - - - -
RS Stock No. 186-3098
BrandRS PRO
€6.64
Each
units
Adapter RJ45 - 2 - Straight Through 21mm 26mm 36mm - - - - -
RS Stock No. 186-3032
BrandRS PRO
€4.08
Each
units
Coupler RJ11 Cat3 - UTP Straight Through 22mm 16mm 37.3mm - - - - -
RS Stock No. 333-6633
Mfr. Part No.DBF8812
€18.23
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - - - - - - - - -
RS Stock No. 821-2923
Mfr. Part No.MH3101-CAT5E
€2.48
Each
units
Coupler RJ45 Cat5e 1 UTP - 18.54mm 16.13mm 26.96mm - - MH3101 MH3101-CAT5E -
RS Stock No. 886-0434
Mfr. Part No.40-9538F
€2.641
Each (In a Pack of 10)
units
D-Sub Modular Adapter Kit DB9, RJ45 - 1 (RJ45) - Straight Through - - - - - - 40 -
RS Stock No. 625-6237
BrandRS PRO
€2.60
Each
units
Adapter RJ45 Socket/9 Way D Plug - - - - 45mm 28mm 18mm - - - - -
RS Stock No. 765-9097
Mfr. Part No.09454521513
BrandHARTING
€42.92
Each
units
Coupler RJ45 Plug/RJ45 Socket Cat6 - - Straight Through 3m - - - - - - -
RS Stock No. 340-9652
BrandRS PRO
€7.39
Each
units
Wiring Box Punch Down Cat5 2 STP Straight Through 25mm 25mm 45mm - - - - -
RS Stock No. 340-9624
BrandRS PRO
€6.81
Each
units
Coupler RJ45 Female Cat5 - UTP Straight Through 17.3mm 16.3mm 28mm - - - - -
RS Stock No. 186-3105
BrandRS PRO
€5.79
Each
units
Adapter RJ45 - 2 - Straight Through 21mm 26mm 36mm - - - - -
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