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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Viewing 81 - 100 of 174 products
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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. 314-8240
BrandRS PRO
HK$49.54
Each
units
Adapter RJ45 Female, 25 Way D-sub Male - - - - 16mm 55mm 40mm - - - - -
RS Stock No. 875-5600
Mfr. Part No.20820010001
BrandHARTING
HK$118.69
Each
units
HIFF Jack RJ45 - 1 - Crossed 15.6mm 13.15mm 41mm - - Ha-VIS preLink 2082001 -
RS Stock No. 293-7948
Mfr. Part No.SPE164212
HK$58.85
Each
units
- - - - - - - - - - - - - -
RS Stock No. 818-722
BrandRS PRO
HK$33.98
Each
units
Adapter RJ45, 25 Way D-sub Female - - Unshielded - 15mm 55.1mm 39mm - - - - -
RS Stock No. 848-5437
Mfr. Part No.CMBAEIY
BrandPanduit
HK$129.98
Each
units
BNC Coupler Module - - - - Straight Through 45.2mm 15.4mm 18.3mm - - CMBA - -
RS Stock No. 768-4425
Mfr. Part No.EHRJ45P5ES
HK$98.54
Each
units
Adapter RJ45 Cat5e - - - 26mm 31mm 30mm - - - - -
RS Stock No. 116-5350
Mfr. Part No.12.03.8025-50
BrandRoline
HK$30.69
Each
units
Adapter D-sub, RJ45 - 1 - - - - - - - - - -
RS Stock No. 314-8149
BrandRS PRO
HK$58.39
Each
units
Adapter RJ45 Female, 9 Way D-sub Male - - - - 16mm 33mm 50mm - - - - -
RS Stock No. 382-2689
BrandRS PRO
HK$41.03
Each
units
Adapter 9 Way D-Sub Plug/RJ45 Socket - - Shielded - 49.5mm 33mm 15mm - - - - -
RS Stock No. 695-0210
Mfr. Part No.RJ11F21G
BrandAmphenol
HK$644.26
Each
units
Adapter RJ11 Female - 6 UTP Straight Through 39.7mm 28.6mm 28.6mm - - RJ11Field RJ11F21G -
RS Stock No. 885-7668
Mfr. Part No.32-2058K
HK$13.644
Each (In a Pack of 10)
units
RJ-31X Surface Jack Adapter RJ31X Female - 1 - Straight Through - - - - - - 32 -
RS Stock No. 498-2962
Mfr. Part No.09458451500
BrandHARTING
HK$645.63
Each
units
RJ Industrial Outlet Push Pull - - - - - 173mm 69mm 90mm - - RJ Industrial - -
RS Stock No. 818-687
BrandRS PRO
HK$36.49
Each
units
Adapter RJ11, 25 Way D-sub Female - - Unshielded - 15mm 55.1mm 39mm - - - - -
RS Stock No. 765-9794
Mfr. Part No.PXP6033TP/E
BrandBulgin
HK$423.32
Each
units
Coupler RJ45 Male Cat5e - STP - 49.2mm - - 32mm - Buccaneer - -
RS Stock No. 768-5532
Mfr. Part No.IE-BSS-V14M-RJ45-C -1012310000
BrandWeidmuller
HK$359.75
Each
units
Coupler RJ45 Cat6a - - - - - - - - - - -
RS Stock No. 625-6237
BrandRS PRO
HK$25.75
Each
units
Adapter RJ45 Socket/9 Way D Plug - - - - 45mm 28mm 18mm - - - - -
RS Stock No. 314-8098
BrandRS PRO
HK$52.18
Each
units
Adapter RJ45 Female, 9 Way D-sub Male - - - - 16mm 33mm 50mm - - - - -
RS Stock No. 333-6611
Mfr. Part No.DPM8812
HK$244.02
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - 14mm 37mm 48mm - - - - -
RS Stock No. 765-9785
Mfr. Part No.PXP6033TP
BrandBulgin
HK$402.70
Each
units
Coupler RJ45 Socket Cat5e 2 STP Straight Through 49.2mm - - 32mm - Buccaneer 6000 -
RS Stock No. 695-0223
Mfr. Part No.RJ11F71G
BrandAmphenol
HK$732.86
Each
units
Adapter RJ11 Female - 6 UTP Straight Through 39.7mm 34.9mm 34.9mm - - RJ11Field RJ11F71G -
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