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. 768-4422
Mfr. Part No.EHRJ45P6S
TWD430.00
Each
units
Adapter RJ45 Cat6 - - - 26mm 31mm 30mm - - - - -
RS Stock No. 768-4416
Mfr. Part No.EHRJ45P5ERS
TWD320.00
Each
units
Adapter RJ45 Cat5e - - - 26mm 31mm 30mm - - - - -
RS Stock No. 768-4425
Mfr. Part No.EHRJ45P5ES
TWD390.00
Each
units
Adapter RJ45 Cat5e - - - 26mm 31mm 30mm - - - - -
RS Stock No. 768-4438
Mfr. Part No.EHFF2
TWD454.00
Each
units
Adapter F Connector/F Connector - - - - 26mm 31mm 21.5mm - - - - -
RS Stock No. 768-4428
Mfr. Part No.EHRJ45P6
TWD403.00
Each
units
Adapter RJ45 Cat6 - - - 26mm 31mm 30mm - - - - -
RS Stock No. 768-4434
Mfr. Part No.EHFW800X2
TWD632.00
Each
units
Coupler FW800 Connector/FW800 Connector - - UTP Crossed 26mm 31mm 45mm - - - - -