Terminal Blocks Explained
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- เผยแพร่เมื่อ 22 ก.ค. 2024
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In this video, we’re going to introduce you to the terminal block which is an important component in any industrial setting.
Terminal blocks are components with an insulated frame that has the sole purpose of securing two or more wires together.
Terminal Block wiring is neat and orderly allowing for quick identification making modification and troubleshooting easier.
Terminal blocks are classified based on characteristics such as structure, device type, and termination options.
There are a variety of methods used to connect the wires inside the terminal block.
1) Probably the most commonly used method for connection is the Screw-in terminal block. bit.ly/3F5NKbc
Screw-in terminal blocks are those that use screws as the method for holding the wires.
2) The Barrier terminal block is very similar to a Screw-in terminal block as they use screws to clamp the wires. bit.ly/3F6SbCz
Depending on the application and environment, the Barrier terminal strip may have a small lid to protect the wiring.
3) Another common method for wire connection is the Spring-Loaded terminal block. bit.ly/3to7AMg
A connection is made by simply inserting the wires. Most of these terminal blocks require the wire to be attached to a ferrule before it is inserted.
The ferrule or wire is attached and released by inserting a spring release device. Some vendors have a unique spring release device while others require a small screwdriver.
4) The Push-fit or Push-in terminal block is becoming very popular. bit.ly/3LWmXBZ
Much like the Spring-Loaded terminal block, the “Push-fit” often requires the wire to be covered by a ferrule.
The big difference between the Spring-loaded and the Push-fit terminal block is the method of wire release. Push-fit terminal blocks have the release device mounted right next to the wire insertion point.
5) Another terminal block that was first used in the Telco industry is the Insulation Displacement Connector or IDC. bit.ly/46mBzCM
The wire insulation does not need to be removed before insertion. Two sharp blades inside the terminal block will slice through the insulation and make contact with the wire.
6) As the name suggests, a Pluggable terminal block has a plug outlet to allow connection to a socket.
The wire is inserted and clamped with a screw. Connection to the wire is made via a plug and socket configuration. This terminal block is used in situations where a quick disconnect is required.
7) On Tab Connector terminal blocks a wire attached to a connector is pushed onto a tab. bit.ly/3ZM5fqu
The wire can be crimp-connected or soldered depending upon the type of connector.
Tab Connector terminal blocks are also available where one side of the terminal block is a tab connection and the other side of the terminal block is a screw clamp connection. bit.ly/3LR23UO
Let’s have a look at some of the different terminal block types.
1) At first glance, a Ground terminal block looks like a typical Screw-in terminal block. bit.ly/46HqwEi
Instead of connecting wires, the Ground terminal block connects the incoming wire to Ground.
The wire is terminated by the panel or the DIN Rail or wherever the block is mounted…We will talk more about DIN rails later.
2) Fused Connection terminal blocks have a fuse inserted in series between the wire-in and the wire-out eliminating the need for external overcurrent protection. bit.ly/46ER2hh
To aid in troubleshooting, many vendors have included a built-in Fuse Failure LED circuit to provide a visual indication of the fuse condition.
3) A Thermocouple block is designed to accept thermocouple lead connections. bit.ly/3Q8K66U
To save space, individual terminal blocks can be connected to form groups or clusters and are generally structured in multi-level configurations. bit.ly/46F5UfF
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#Terminal_block #RealPars
Great video! Some more information:
1. Usually, gray terminal blocks are used for phase/active/line/hot wires, blue ones are used for neutral wires, and green with yellow ones for ground wires.
2. There are cover accessories to cover the right-most terminal block, to avoid leaving exposed contacts.
3. There are accessories to join various terminal blocks together. That is, to form a single electrical point or node. In this way, theres no need to splice wires.
4. There are accessories to avoid slipping of the terminals blocks. In this way, they can’t move sideways in the DIN rail accidentally.
I'm an electrical build apprentice so these videos have been awesome! Thanks!
Great to hear!
You are the best, thank you very much for sharing this knowledge.
You're very welcome, Salvador!
Thank you Realpars
Our pleasure, Wilberth!
I can't believe i have been bing watching all your videos...and i love it.
Yay! Thank you!
do you receive full course?
Nice visual animated vedio. Very informative.
Hats off to your efforts
Thanks a lot, Vinoth!
Very informative, thanks a lot
Glad it was helpful!
Perfect just perfect
Thanks.
Glad you like it!
Thank you very much !
You are very welcome!
Thankyou So much sir
Very Informative video on Terminal Block
Our pleasure!
Awesome explain
Glad you liked it, Haitham!
It would’ve been great if you had mentioned installation terminals with neutral sectionable conenection and what are intended for (for instance the part number type PT 2,5 L/NT/PE from Phoenix Contacts)
Excellent.
Many thanks!
Well done sir very useful thanks
Thank you, Umar
Very very nice learning vedios, thanks a lot.
You're very welcome!
Great stuff! Very clear. If you’re taking suggestions for future content, I’d like to understand safety-related control components better. For example, safety relays commonly found in control boxes.
Hi Eric,
We definitely add all the topic suggestion to a list! I will go ahead and add this one as well - we always appreciate such topic suggestions :).
Many thanks for sharing and happy learning!
@@realpars So, you guys never made an explanation video about safety relays :P Would be nice tho.
Realpars are awesome
Thanks a lot, Sam!
Excellent. Pls do some video on instrument Barriers n Groundings.
Hey Shahid!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Fantastic video. I've been using these for years but I was just never entirely sure on the nomenclature and the different types. It's funny because my new job now is going to be dealing with a lot of thermocouples for sealing machines in the food industry, and as the process improvement engineer it would have been embarrassing if I didn't know that I needed a specific terminal block for those connectors.
Thank you so much!
I have a hard time getting a reading of voltage on wires on terminal blocks at times with my multimeter not sure if I'm placing in wrong hole
Thank you for the videos I hope you will explain about the scale devices and how to connect them with the logic controllers
Hi Habeb,
Thanks for your kind comment and feedback!
I will make sure to pass this on to our course developers.
Happy learning!
I always use Weidmuller screw in terminal blocks when connecting cables, the barrier is just to low quality. Take two screws in terminal blocks and zip tie them together, best connection you can get.
I love your videos, please do you have certification courses
Thanks a lot of your kind comment, great to hear that!
Yes, you can purchase our Certificate of Completion over learn.realpars.com/products/certificate, please bear in mind that we are able to issue your well-deserved certificate once you have completed at least 280 video courses.
Hope this helps! If I can be of any further assistance, please let me know - I’m more than happy to help!
Is it possible to check the signals by connecting leads in push feed terminals like it can be done in screw-in terminals?
Hi Dipankar. I'm not sure I understand your question, but I'll give it a shot. Unlike screw terminal that quite often will support more wires, push-feed terminals are not so user-friendly. Adding additional wires for testing is not usually possible considering that space is limited. I hope that helps?
Can you make videos on panel earthing and grounding? Like a panel has power supplies to run the components it has plus input and output cards to process the signals, so how we will connect everything?
Means signal grounding, earthing, shield or something like that!
Hey Shivam!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
@@realpars your videos are just awesome!!
Not all wires are suited for screw connectors use . Thermocouple wires are such
Please make a video on hybrid motor starters & universal motor controllers
Thanks for the topic suggestion, I will definitely go ahead and forward this to our creator team. Happy learning!
👌👌👌👌💐
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i want to learn about the structure and working principle of PCB and the symbols on the PCB, can you help me?
Hi there. I'm sorry, but I'm not sure what you are referring to. Can you please elaborate?
@@realpars (printed circuit board assembly - PCBA). i would like to ask you about the principle of current input and output on the PCBA,and the meaning of the symbols above it. For example 0v,12v,24,COM....
Is terminal cabinet same as terminal block?
Hi @Astaeele Shorts. I'm not sure what you mean by a terminal cabinet. A Control Cabinet contains lots of terminal blocks and lots of other components as well. Please let us know if I haven't answered your question.
Hi my friend! I really like your videos. I'm ready to buy video tutorials. But I have problems with English (((I live in Russia. I watch your TH-cam videos using subtitle translation,which is very convenient. Please help me solve this problem.
Hi,
Thanks for your comment! We currently only provide our course videos in English, you are always able to turn on the English subtitles as that might make it a bit easier for you.
Our apologies for any inconvenience!
Happy learning!