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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Viewing 81 - 100 of 141 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
RS Stock No. 186-3133
BrandRS PRO
$4.47
Each
units
Coupler RJ11 - 2 Unshielded Straight Through 20.55mm 14.48mm 26.96mm - - - -
RS Stock No. 443-9519
BrandRS PRO
$7.41
Each
units
T-Adapter RJ45 Cat5e 2 Shielded Straight Through - - - - 170 mm - -
RS Stock No. 314-8177
BrandRS PRO
$4.65
Each
units
Adapter RJ45 Female, 25 Way D-sub Female - - - - 16mm 55mm 40mm - - - -
RS Stock No. 186-3076
BrandRS PRO
$13.00
Each
units
Adapter RJ11 - 2 - Straight Through 21mm 26mm 36mm - - - -
RS Stock No. 333-6611
Mfr. Part No.DPM8812
$35.22
Each
units
Splitter RJ45 Female, RJ45 Male Cat5e 3 - - 14mm 37mm 48mm - - - -
RS Stock No. 364-4322
Mfr. Part No.SPE190689
$30.61
Each
units
Splitter RJ45 - 4 - - 26mm 55mm 62mm - - - -
RS Stock No. 875-5610
Mfr. Part No.20821010220
BrandHARTING
$105.30
Each
units
Junction Box RJ45 Cat6EA 2 - Crossed 60mm 81mm 70mm - - Ha-VIS preLink 2082101
RS Stock No. 765-9028
Mfr. Part No.09452451590
BrandHARTING
$34.07
Each
units
Adapter RJ45 Socket/RJ45 Socket Cat6 - - - 34mm 34mm 48.2mm - - - -
RS Stock No. 907-5668
BrandRS PRO
$14.14
Each
units
- - Cat6 - FTP - - - - - - FT -
RS Stock No. 695-0223
Mfr. Part No.RJ11F71G
BrandAmphenol
$141.89
Each
units
Adapter RJ11 Female - 6 UTP Straight Through 39.7mm 34.9mm 34.9mm - - RJ11Field RJ11F71G
RS Stock No. 314-8228
BrandRS PRO
$8.52
Each
units
Adapter RJ45 Female, 9 Way D-sub Male - - - - 16mm 33mm 50mm - - - -
RS Stock No. 443-9165
BrandRS PRO
$5.71
Each
units
T-Adapter RJ45 Cat5e 2 Unshielded Straight Through - - - - 170 mm - -
RS Stock No. 748-0737
Mfr. Part No.2859084
$204.86
Each
units
Adapter RJ45 Female Cat5e - - - 52.5mm 25.4mm 88mm - - D-LAN-CAT.5E-U -
RS Stock No. 818-659
BrandRS PRO
$3.25
Each
units
Adapter RJ11, 9 Way D-sub Male - - Unshielded - 15mm 33mm 49.5mm - - - -
RS Stock No. 765-9794
Mfr. Part No.PXP6033TP/E
BrandBulgin
$46.00
Each
units
Coupler RJ45 Male Cat5e - STP - 49.2mm - - 32mm - Buccaneer -
RS Stock No. 768-5535
Mfr. Part No.IE-M12-ADAP S 1 -8901620000
BrandWeidmuller
$57.34
Each
units
Adapter M12 Socket/RJ45 Socket Cat5 - - - 22.3mm 22.6mm 48.5mm - - - -
RS Stock No. 907-5656
BrandRS PRO
$22.34
Each
units
- - Cat5e - FTP - - - - - - FT -
RS Stock No. 314-8111
BrandRS PRO
$9.53
Each
units
Adapter RJ45 Female, 9 Way D-sub Female - - - - 16mm 33mm 50mm - - - -
RS Stock No. 875-5600
Mfr. Part No.20820010001
BrandHARTING
$16.46
Each
units
HIFF Jack RJ45 - 1 - Crossed 15.6mm 13.15mm 41mm - - Ha-VIS preLink 2082001
RS Stock No. 878-2432
Mfr. Part No.J60020A0002
$110.07
Each
units
Coupler RJ45 Cat6 1 Shielded Straight Through 38mm 38mm 44.8mm - - TOC -
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