RJ45 connectors & accessories
QLarge selection of network connectors: different types & categories

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Item no. 88035P8.1
RJ45 Premium plug STP, Cat.6A/ClassEA, Field-plug, full metalItem no. 88035UTP.1
ECOLAN® RJ45 Connector UTP, Cat.6, Field-PlugItem no. 88035.2
Field installable connector, RJ45 Cat.8 Class 1 AWG22 - 27, zinc alloyItem no. 88048.1-10
Dust protection cap for RJ45 Connector, black, bag of 10Item no. 37563.T
RJ45 Stewart Connector STP, SS39200-012 Cat.6, without anti-kink sleeveBuy RJ45 & other network connectors online at EFB-Elektronik
Network Connectors Overview: RJ10, RJ11, RJ12, DEC & RJ45
- RJ10: Compact and used for telephone handsets, RJ10 connectors have four pins, ensuring reliable voice signal transmission.
- RJ11: Commonly found in analog telephone connections, RJ11 has four or six pins, typically used for voice transmission in landline phones or DSL installations.
- RJ12: Similar to RJ11 but with six assignable pins, RJ12 provides enhanced functionality, supporting multiple telephone lines.
- DEC: These connectors, developed by Digital Equipment Corporation, are mainly used in specialised or older network systems. Though robust, DEC connectors are increasingly replaced by RJ45 in modern setups.
Cat.6, Cat.7 & Cat.8 Connectors: Understanding the Different Categories
- Cat.5E: Category 5 (Enhanced) supports data rates up to 2,5 Gbit/s over 100 metres, ideal for smaller networks.
- Cat.6: Cat.6 connectors offer better performance than Cat.5E and support up to 5 Gbit/s for cable lengths of up to 100 metres, suitable for home and mid-sized networks. The improved shielding minimises interference and ensures a reliable connection.
- Cat.6A: Category 6 Augmented is a further development of Cat.6. With better shielding, this category is particularly suitable for office environments where many cables run in parallel and electromagnetic interference needs to be reduced.
- Cat.7: Originally designed to support higher data rates with superior shielding, Cat.7 allowed for transmission speeds of up to 40 Gbit/s over short distances using GG45 and ARJ45 connectors. However, due to a lack of market acceptance, these connectors—and consequently this standard—did not gain widespread adoption.
- Cat.8.1: Category 8 Class 1 is the latest development in the field of copper cabling. Designed for data centres, Cat.8.1 supports data rates up to 40 Gbit/s over 30 metres, with excellent shielding to minimise electromagnetic interference.
Shielded, unshielded & field attachable RJ45 connectors
- Die-cast zinc housing with dust protection cap
- 360° shield contact for optimal EMC shielding
- Optional IP68 compatibility for harsh environments
- Available in shielded and unshielded versions
Crimping RJ45 plugs: pin assignment & wire connection
- Strip the cable: Remove 2-3 cm of the outer insulation of the network cable to expose the eight coloured wires.
- Organise the wires:Arrange the cores in the correct order according to the selected standard (T568A or T568B).
- Shorten the wires:Cut the wires to a uniform length.
- Insert into the plug:Insert the wires into the RJ45 plug, ensuring that each wire slides into the corresponding contact.
- Crimping:Place the plug in the crimping tool and press the tool to press the contacts onto the wires and make the connection.
- T568A: This standard is more commonly found in residential installations. The wire pairs are assigned in such a way that maximum compatibility with older telephone installations is guaranteed.
- T568B: The T568B standard is more common and is often used in commercial installations. It offers the same functionality as T568A, but in a different wire sequence.
Order RJ45 connectors, accessories & tools online at EFB-Elektronik
RJ45 Connector, field-plugs
- Robust design made from a die-cast zinc housing incl. dust protection flap
- Full shielding with 360° shield contact (shielded versions)
- Good EMC shielding
- Can be combined with IP68 screw connection for harsh environments
- Shielded and unshielded variants