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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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. 875-5613
Mfr. Part No.20820000002
BrandHARTING
kr 107,88
Each
Units
HIFF Jack RJ45 - 1 - Crossed 15.6mm 13.15mm 41mm - - Ha-VIS preLink 2082000 -
RS Stock No. 648-6674
Mfr. Part No.1689064
kr 84,15
Each
Units
Modular Coupler RJ45 Cat5e 1 Shielded - 21.6mm - 34.5mm - - VS-08-BU-RJ45/BU - -
RS Stock No. 748-0737
Mfr. Part No.2859084
kr 1 205,97
Each
Units
Adapter RJ45 Female Cat5e - - - 52.5mm 25.4mm 88mm - - D-LAN-CAT.5E-U - -
RS Stock No. 782-5862
Mfr. Part No.2111121-1
BrandCOMMSCOPE
kr 149,55
Each
Units
RJ45 Coupler - Cat5e 2 Unshielded Straight Through 29.95mm 14.48mm 20.62mm - - - - -
RS Stock No. 821-2927
Mfr. Part No.MH3101S-CAT5E
kr 45,71
Each
Units
Coupler RJ45 Cat5e 1 STP - 18.54mm 16.13mm 27.46mm - - MH3101 MH3101S-CAT5E -
RS Stock No. 821-2923
Mfr. Part No.MH3101-CAT5E
kr 33,80
Each
Units
Coupler RJ45 Cat5e 1 UTP - 18.54mm 16.13mm 26.96mm - - MH3101 MH3101-CAT5E -
RS Stock No. 619-5491
Mfr. Part No.PX0839/IDC
BrandBulgin
kr 212,76
Each
Units
Coupler RJ45 Cat5e 1 Shielded - 37.7mm 42mm 45mm - - Buccaneer - -
RS Stock No. 765-9785
Mfr. Part No.PXP6033TP
BrandBulgin
kr 261,81
Each
Units
Coupler RJ45 Male Cat5e - STP - 49.2mm - - 32mm - Buccaneer - -
RS Stock No. 364-4316
Mfr. Part No.SPE190688
kr 286,64
Each
Units
Splitter RJ45 - 4 - - 26mm 55mm 62mm - - - - -
RS Stock No. 765-9031
Mfr. Part No.09455451560
BrandHARTING
kr 174,67
Each
Units
Coupler RJ45 Socket/RJ45 Socket Cat6 - Shielded - 13.25mm 15.7mm 34.5mm - - - - -
RS Stock No. 821-2939
Mfr. Part No.MH3101S-CAT6A
kr 96,31
Each
Units
Coupler RJ45 Cat6a 1 STP - 16.8mm 16.1mm 30mm - - MH3101 MH3101S-CAT6A -
RS Stock No. 765-9088
Mfr. Part No.09454521510
BrandHARTING
kr 375,47
Each
Units
Coupler RJ45 Plug/RJ45 Socket Cat6 - - Straight Through 1.5m - - - - - - -
RS Stock No. 124-2520
Mfr. Part No.CLB-JL45
kr 69,19
Each
Units
Adapter RJ45, Terminal Block - 8 - Straight Through - - - - - - - -
RS Stock No. 130-2310
Mfr. Part No.1419022
kr 231,70
Each
Units
Coupler RJ45 Female Cat6 2 - Straight Through 23mm 28.8mm 18mm - - CUC-F-D1ZNI-S/R4GC8 - -
RS Stock No. 885-7696
Mfr. Part No.30-9242
kr 98,60
Each
Units
Coupler RJ45 Female Cat5e 1 Shielded Straight Through 25mm 23.5mm 47mm - - - 30 -
RS Stock No. 208-1742
Mfr. Part No.A 42-A0020
kr 128,99
Each
Units
Adapter RJ45 Female, RJ45 Male Cat5 - - - - - - - - - - -
RS Stock No. 875-5644
Mfr. Part No.20822040001
BrandHARTING
kr 330,31
Each
Units
Plug RJ45 Cat6a - STP - 22mm 26.2mm 69mm - - Ha-VIS preLink 2082204 -
RS Stock No. 724-8953
Mfr. Part No.RJ45-PCBUNIT
kr 219,61
Each
Units
PCB Unit RJ45, Screw Terminal - - - - - - - - - - - -
RS Stock No. 768-5532
Mfr. Part No.IE-BSS-V14M-RJ45-C -1012310000
BrandWeidmuller
kr 317,74
Each
Units
Coupler RJ45 Cat6a - - - - - - - - - - -
RS Stock No. 782-5865
Mfr. Part No.2111122-1
BrandCOMMSCOPE
kr 129,41
Each
Units
RJ45 Coupler - Cat5e 2 Shielded Straight Through 29.95mm 14.48mm 20.62mm - - - - -
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