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. 364-4316
Mfr. Part No.SPE190688
SGD43.71
Each
units
Splitter RJ45 - 4 - - 26mm 55mm 62mm - - - - -
RS Stock No. 314-8234
BrandRS PRO
SGD9.28
Each
units
Adapter RJ45 Female, 9 Way D-sub Female - - - - 16mm 33mm 50mm - - - - -
RS Stock No. 885-7668
Mfr. Part No.32-2058K
SGD2.379
Each (In a Pack of 10)
units
RJ-31X Surface Jack Adapter RJ31X Female - 1 - Straight Through - - - - - - 32 -
RS Stock No. 193-0313
Mfr. Part No.RJ45SPLITTER
BrandStartech
SGD17.90
Each
units
Splitter Cable Adapter - Cat5, Cat5e - - Straight Through 330mm - - - 330 mm - - -
RS Stock No. 818-659
BrandRS PRO
SGD7.68
Each
units
Adapter RJ11, 9 Way D-sub Male - - Unshielded - 15mm 33mm 49.5mm - - - - -
RS Stock No. 400-9001
BrandRS PRO
SGD38.96
Each
units
T-Adapter RJ45 Cat5 2 Shielded Straight Through - - - - 150 mm - - -
RS Stock No. 765-9794
Mfr. Part No.PXP6033TP/E
BrandBulgin
SGD77.06
Each
units
Coupler RJ45 Male Cat5e - STP - 49.2mm - - 32mm - Buccaneer - -
RS Stock No. 916-0252
BrandRS PRO
SGD14.98
Each
units
Feedthrough Connector RJ45 Cat5e 2 FTP - - 26mm - - - FT - -
RS Stock No. 2509555720
Mfr. Part No.40-9528M
SGD6.48
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508613985
Mfr. Part No.TDG1026KC3
BrandL-Com
SGD5.12
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508614001
Mfr. Part No.TDG1026KC6
BrandL-Com
SGD13.38
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508614017
Mfr. Part No.TDG1026KS-8P
BrandL-Com
SGD10.86
Each
units
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RS Stock No. 2508613991
Mfr. Part No.TDG1026KC5
BrandL-Com
SGD11.21
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509027391
Mfr. Part No.UJ5T568
BrandL-Com
SGD21.68
Each
units
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RS Stock No. 2508609380
Mfr. Part No.UJ5T568S
BrandL-Com
SGD27.11
Each
units
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RS Stock No. 2509556767
Mfr. Part No.40-9588F
SGD4.51
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508613064
Mfr. Part No.ECF504-5M
BrandL-Com
SGD29.61
Each
units
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