Ethernet Couplers

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. 916-0243
BrandRS PRO
kr 70,65
Each
Units
Feedthrough Connector RJ45 Female Cat5e 2 UTP - - 26mm - - - FT - -
RS Stock No. 741-7317
Mfr. Part No.IE-PS-RJ45-FH-BK -1963600000
BrandWeidmuller
kr 299,10
Each
Units
Field Installation Plug RJ45 Cat6a 1 STP - 9.45mm 12.9mm 51.32mm - - - - -
RS Stock No. 765-9034
Mfr. Part No.09454521560
BrandHARTING
kr 201,59
Each
Units
Coupler RJ45 Socket/RJ45 Socket Cat6 1 Shielded - - - 35.9mm - - - - -
RS Stock No. 765-9084
Mfr. Part No.09454521504
BrandHARTING
kr 370,78
Each
Units
Coupler RJ45 Plug/RJ45 Socket Cat6 1 Shielded Straight Through 500mm - - 27.9mm - - - -
RS Stock No. 875-5565
Mfr. Part No.09454521561
BrandHARTING
kr 182,45
Each
Units
Coupler RJ45 - 1 - - 35.9mm - - 27.9mm - Har-Port 0945452 -
RS Stock No. 340-9630
BrandRS PRO
kr 50,52
Each
Units
Coupler RJ45 Female Cat5 - STP Straight Through 25mm 25mm 45mm - - - - -
RS Stock No. 875-5604
Mfr. Part No.20820010002
BrandHARTING
kr 125,02
Each
Units
HIFF Jack RJ45 - 1 - Crossed 15.6mm 13.15mm 41mm - - Ha-VIS preLink 2082001 -
RS Stock No. 886-0434
Mfr. Part No.40-9538F
kr 28,654
Each (In a Pack of 10)
Units
D-Sub Modular Adapter Kit DB9, RJ45 - 1 (RJ45) - Straight Through - - - - - - 40 -
RS Stock No. 333-6633
Mfr. Part No.DBF8812
kr 187,83
Each
Units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - - - - - - - - -
RS Stock No. 916-0252
BrandRS PRO
kr 107,01
Each
Units
Feedthrough Connector RJ45 Cat5e 2 FTP - - 26mm - - - FT - -
RS Stock No. 818-693
BrandRS PRO
kr 37,07
Each
Units
Adapter RJ45, 9 Way D-sub Male - 1 Unshielded - 15mm 33mm 49.5mm - - - - -
RS Stock No. 340-9624
BrandRS PRO
kr 94,68
Each
Units
Coupler RJ45 Female Cat5 - UTP Straight Through 17.3mm 16.3mm 28mm - - - - -
RS Stock No. 186-3048
BrandRS PRO
kr 45,60
Each
Units
Coupler RJ45 Cat3 - UTP Straight Through 22.02mm 16mm 37.3mm - - - - -
RS Stock No. 907-5656
BrandRS PRO
kr 94,68
Each
Units
- - Cat5e - FTP - - - - - - FT - -
RS Stock No. 186-3111
BrandRS PRO
kr 56,18
Each
Units
Modular Coupler RJ45 - 2 Shielded Straight Through 18.54mm 21mm 27.46mm - - - - -
RS Stock No. 875-5600
Mfr. Part No.20820010001
BrandHARTING
kr 122,03
Each
Units
HIFF Jack RJ45 - 1 - Crossed 15.6mm 13.15mm 41mm - - Ha-VIS preLink 2082001 -
RS Stock No. 818-700
BrandRS PRO
kr 37,07
Each
Units
Adapter RJ45, 9 Way D-sub Female - 1 Unshielded - 15mm 33mm 49.5mm - - - - -
RS Stock No. 765-9097
Mfr. Part No.09454521513
BrandHARTING
kr 427,91
Each
Units
Coupler RJ45 Plug/RJ45 Socket Cat6 - - Straight Through 3m - - - - - - -
RS Stock No. 340-9646
BrandRS PRO
kr 66,45
Each
Units
Wiring Box Punch Down Cat5e 2 UTP Straight Through 25mm 25mm 45mm - - - - -
RS Stock No. 186-3149
BrandRS PRO
kr 43,85
Each
Units
Coupler RJ45 - 2 UTP Straight Through 20.55mm 14.48mm 26.96mm - - - - -