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 61 - 80 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. 333-6633
Mfr. Part No.DBF8812
$25.30
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - - - - - - - -
RS Stock No. 370-5196
BrandRS PRO
$8.22
Each
units
Adapter 25 Way D-Sub Plug/RJ45 Socket - - Shielded - 39mm 55.1mm 15mm - - - -
RS Stock No. 821-2920
Mfr. Part No.MH3101S-8821
$6.92
Each
units
Coupler RJ45 - 1 STP - 18.54mm 16.13mm 27.46mm - - MH3101 MH3101S-8821
RS Stock No. 782-0797
Mfr. Part No.555050-1
BrandCOMMSCOPE
$35.34
Each
units
Coupler - Cat3 - UTP - 30.73mm 14.6mm 19.05mm - - - -
RS Stock No. 208-1742
Mfr. Part No.A 42-A0020
$29.83
Each
units
Adapter RJ45 Female, RJ45 Male Cat5 - - - - - - - - - -
RS Stock No. 821-2927
Mfr. Part No.MH3101S-CAT5E
$10.92
Each
units
Coupler RJ45 Cat5e 1 STP - 18.54mm 16.13mm 27.46mm - - MH3101 MH3101S-CAT5E
RS Stock No. 625-6237
BrandRS PRO
$13.38
Each
units
Adapter RJ45 Socket/9 Way D Plug - - - - 45mm 28mm 18mm - - - -
RS Stock No. 382-2689
BrandRS PRO
$13.37
Each
units
Adapter 9 Way D-Sub Plug/RJ45 Socket - - Shielded - 49.5mm 33mm 15mm - - - -
RS Stock No. 292-9521
Mfr. Part No.2962722
$59.63
Each
units
- - - - - - 54mm 42mm 45mm - - - -
RS Stock No. 821-2911
Mfr. Part No.MH3101-8821
$2.90
Each
units
Coupler RJ45 - 1 UTP - 18.54mm 16.13mm 26.96mm - - MH3101 MH3101-8821
RS Stock No. 400-9001
BrandRS PRO
$33.38
Each
units
T-Adapter RJ45 Cat5 2 Shielded Straight Through - - - - 150 mm - -
RS Stock No. 208-1792
Mfr. Part No.1 42-114
BrandMolex
$14.23
Each
units
Extender RJ45 - - - - - - - - 150 mm - -
RS Stock No. 782-5862
Mfr. Part No.2111121-1
BrandCOMMSCOPE
$16.87
Each
units
RJ45 Coupler - Cat5e 2 Unshielded Straight Through 29.95mm 14.48mm 20.62mm - - - -
RS Stock No. 875-5641
Mfr. Part No.20821010010
BrandHARTING
$23.18
Each
units
Plug RJ45 - 1 - Crossed 14.4mm 18.6mm 47.35mm - - Ha-VIS preLink 2082101
RS Stock No. 768-5544
Mfr. Part No.IE-BSS-V14M-RJ45-FJ- -1085260000
BrandWeidmuller
$41.18
Each
units
Coupler RJ45/IDC Cat6a - - - - - - - - - -
RS Stock No. 768-4425
Mfr. Part No.EHRJ45P5ES
$19.13
Each
units
Adapter RJ45 Cat5e - - - 26mm 31mm 30mm - - - -
RS Stock No. 782-5865
Mfr. Part No.2111122-1
BrandCOMMSCOPE
$20.10
Each
units
RJ45 Coupler - Cat5e 2 Shielded Straight Through 29.95mm 14.48mm 20.62mm - - - -
RS Stock No. 333-6611
Mfr. Part No.DPM8812
$35.22
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - 14mm 37mm 48mm - - - -
RS Stock No. 875-5654
Mfr. Part No.20821010001
BrandHARTING
$37.59
Each
units
Extender RJ45 - 1 - Crossed 15.6mm 13.15mm 65.7mm - - 2082 2082101
RS Stock No. 186-3076
BrandRS PRO
$13.00
Each
units
Adapter RJ11 - 2 - Straight Through 21mm 26mm 36mm - - - -
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