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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Part Details Brand Type Accessory Type Interface Type LAN Category Number of Ports Shield Type Wiring Configuration Length Width Depth Diameter Extension Length Series Number Series
Black 8 way unshielded RJ45 coupler RS Pro Coupler - RJ45 - 2 UTP Straight Through 20.55mm 14.48mm 26.96mm - - - -
RS PRO RJ45 Modular Coupler, 2 Port, Shielded RS Pro Modular Coupler - RJ45 - 2 Shielded Straight Through 18.54mm 21mm 27.46mm - - - -
Cat.5e RJ45 STP socket-socket coupler RS Pro Coupler - RJ45 Female Cat5 - STP Straight Through 25mm 25mm 45mm - - - -
Beige 8way RJ45 straight through coupler RS Pro Coupler - RJ45 Cat3 - UTP Straight Through 22.02mm 16mm 37.3mm - - - -
8 way female to 2 female RJ45 adaptor RS Pro Adapter - RJ45 - 2 - Straight Through 21mm 26mm 36mm - - - -
RS PRO RJ11 Coupler, 2 Port, Unshielded RS Pro Coupler - RJ11 - 2 Unshielded Straight Through 20.55mm 14.48mm 26.96mm - - - -
RS 9 Way D-sub Male, RJ45 Adapter, 1 Port, Unshielded RS Pro Adapter - 9 Way D-sub Male, RJ45 - 1 Unshielded - 15mm 33mm 49.5mm - - - -
Beige 6way straight through RJ11 coupler RS Pro Coupler - RJ11 Cat3 - UTP Straight Through 22mm 16mm 37.3mm - - - -
RS Pro 9 Way D-sub Female, RJ45 Adapter, 1 Port, Unshielded RS Pro Adapter - 9 Way D-sub Female, RJ45 - 1 Unshielded - 15mm 33mm 49.5mm - - - -
RS PRO RJ45 Socket/9 Way D Plug Adapter RS Pro Adapter - RJ45 Socket/9 Way D Plug - - - - 45mm 28mm 18mm - - - -
Cinch Connectors Coupler, 1 Port, Unshielded Cinch Connectors Coupler - - - 1 Unshielded Straight Through 22.5mm 17mm 37.5mm - - 30 -
Weidmuller Cat6a RJ45 Coupler, 2 Port, STP Weidmuller Coupler - RJ45 Cat6a 2 STP - - - 34.7mm 30mm - - -
6 way female to 2 female RJ11 adaptor RS Pro Adapter - RJ11 - 2 - Straight Through 21mm 26mm 36mm - - - -
RS PRO 9 Way D-sub Male, RJ45 Female Adapter RS Pro Adapter - 9 Way D-sub Male, RJ45 Female - - - - 16mm 33mm 50mm - - - -
MH Connectors Cat6 RJ45 Coupler, 1 Port, UTP MH3101 Series MH Connectors Coupler - RJ45 Cat6 1 UTP - 16.6mm 16.2mm 29.8mm - - MH3101-CAT6 MH3101
Cat.5e RJ45 UTP socket-socket coupler RS Pro Coupler - RJ45 Female Cat5 - UTP Straight Through 17.3mm 16.3mm 28mm - - - -
EH PANEL RJ45 CAT 5 E SHIELDED Switchcraft Adapter - RJ45 Cat5e - - - 26mm 31mm 30mm - - - -
Cinch Connectors DB9, RJ45 D-Sub Modular Adapter Kit, 1 (RJ45) Port Cinch Connectors D-Sub Modular Adapter Kit - DB9, RJ45 - 1 (RJ45) - Straight Through - - - - - 40 -
RS Pro Cat3 RJ11 Female, RJ11 Male Extender, 1 Port, 2 m Extension Length RS Pro Extender - RJ11 Female, RJ11 Male Cat3 1 - - - - - - 2 m - -
Beige 8way(1-8 pin)RJ45 rollover coupler RS Pro Coupler - RJ45 Cat3 - UTP Crossed 22.02mm 16mm 37.3mm - - - -
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