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
RS Stock No. 741-7317
Mfr. Part No.IE-PS-RJ45-FH-BK -1963600000
BrandWeidmuller
MYR113.11
Each
units
Field Installation Plug RJ45 Cat6a 1 STP - 9.45mm 12.9mm 51.32mm - - - -
RS Stock No. 741-7326
Mfr. Part No.IE-FCM-RJ45-C -1018790000
BrandWeidmuller
MYR139.90
Each
units
Coupler RJ45 Cat6a 2 STP - - - 34.7mm 30mm - - -
RS Stock No. 768-5532
Mfr. Part No.IE-BSS-V14M-RJ45-C -1012310000
BrandWeidmuller
MYR102.06
Each
units
Coupler RJ45 Cat6a - - - - - - - - - -
RS Stock No. 741-7348
Mfr. Part No.IE-BS-V04P-RJ45-C -1963490000
BrandWeidmuller
MYR93.45
Each
units
Coupler RJ45 Cat6a - STP - - - - - - - -
RS Stock No. 768-5538
Mfr. Part No.8901630000
BrandWeidmuller
MYR205.68
Each
units
Adapter M12 Socket/RJ45 Socket Cat5 - - - 22.3mm 22.6mm 48.5mm - - - -
RS Stock No. 768-5535
Mfr. Part No.IE-M12-ADAP S 1 -8901620000
BrandWeidmuller
MYR196.58
Each
units
Adapter M12 Socket/RJ45 Socket Cat5 - - - 22.3mm 22.6mm 48.5mm - - - -
RS Stock No. 768-5544
Mfr. Part No.IE-BSS-V14M-RJ45-FJ- -1085260000
BrandWeidmuller
MYR120.71
Each
units
Coupler RJ45/IDC Cat6a - - - - - - - - - -