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 41 - 60 of 141 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
RS Stock No. 916-0259
BrandRS PRO
$25.16
Each
units
Feedthrough Connector RJ45 Cat6 2 FTP - - 26mm - - - FT -
RS Stock No. 619-5491
Mfr. Part No.PX0839/IDC
BrandBulgin
$58.68
Each
units
Coupler RJ45 Cat5e 1 Shielded - 37.7mm 42mm 45mm - - Buccaneer -
RS Stock No. 186-3054
BrandRS PRO
$30.29
Each
units
Coupler RJ45 Cat3 - UTP Crossed 22.02mm 16mm 37.3mm - - - -
RS Stock No. 768-4416
Mfr. Part No.EHRJ45P5ERS
$403.29
Each
units
Adapter RJ45 Cat5e - - - 26mm 31mm 30mm - - - -
RS Stock No. 765-9088
Mfr. Part No.09454521510
BrandHARTING
$76.33
Each
units
Coupler RJ45 Plug/RJ45 Socket Cat6 - - Straight Through 1.5m - - - - - -
RS Stock No. 885-7696
Mfr. Part No.30-9242
$15.54
Each
units
Coupler RJ45 Female Cat5e 1 Shielded Straight Through 25mm 23.5mm 47mm - - - 30
RS Stock No. 818-716
BrandRS PRO
$30.20
Each
units
Adapter RJ45, 25 Way D-sub Male - - Unshielded - 15mm 55.1mm 39mm - - - -
RS Stock No. 916-0255
BrandRS PRO
$13.18
Each
units
Feedthrough Connector RJ45 Cat6 2 UTP - - 26mm - - - FT -
RS Stock No. 625-6192
BrandRS PRO
$38.84
Each
units
Adapter RJ11 Socket/9 Way D Plug - - - - 45mm 28mm 18mm - - - -
RS Stock No. 186-3161
BrandRS PRO
$276.64
Each
units
Extender RJ45 Female, RJ45 Male Cat3 1 - - - - - - 2 m - -
RS Stock No. 364-4316
Mfr. Part No.SPE190688
$1,290.16
Each
units
Splitter RJ45 - 4 - - 26mm 55mm 62mm - - - -
RS Stock No. 186-3105
BrandRS PRO
$36.35
Each
units
Adapter RJ45 - 2 - Straight Through 21mm 26mm 36mm - - - -
RS Stock No. 874-1263
BrandRS PRO
$7.16
Each
units
- - - - - - - - - - - - -
RS Stock No. 768-5532
Mfr. Part No.IE-BSS-V14M-RJ45-C -1012310000
BrandWeidmuller
$39.90
Each
units
Coupler RJ45 Cat6a - - - - - - - - - -
RS Stock No. 768-4434
Mfr. Part No.EHFW800X2RS
$29.25
Each
units
Coupler FW800 Connector/FW800 Connector - - UTP Crossed 26mm 31mm 45mm - - - -
RS Stock No. 400-9017
BrandRS PRO
$22.53
Each
units
T-Adapter RJ45 Cat5 2 Unshielded Straight Through - - - - 150 mm - -
RS Stock No. 848-5440
Mfr. Part No.NKBNCMBLY
BrandPanduit
$8.64
Each
units
BNC Coupler Module - - - - Straight Through 32.5mm 16.3mm 21.8mm - - NKBNCM -
RS Stock No. 818-665
BrandRS PRO
$7.00
Each
units
Adapter RJ11, 9 Way D-sub Female - - Unshielded - 15mm 33mm 49.5mm - - - -
RS Stock No. 625-6209
BrandRS PRO
$7.47
Each
units
Adapter RJ11 - - - Straight Through 18mm 45mm 28mm - - - -
RS Stock No. 370-5196
BrandRS PRO
$8.22
Each
units
Adapter 25 Way D-Sub Plug/RJ45 Socket - - Shielded - 39mm 55.1mm 15mm - - - -
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