Well…. you might ask, If you want to connect wires, why not just solder them together? Or twist them together and wrap them with electrical tape?
Using terminal blocks is a much better solution for connecting wires. Terminal blocks provide more flexibility.
For example, when using terminal blocks, wiring modifications are easy because wires can be removed or added quickly.
Terminal Block wiring is neat and orderly allowing for quick identification making modification and troubleshooting easier. We’ll show you more good reasons to use terminal blocks later in this article.
Terminal blocks are classified based on characteristics such as structure, device type, and termination options. Let’s explore some of the classifications and characteristics of terminal blocks typically encountered in industry today.
There are a variety of methods used to connect the wires inside the terminal block. Let’s have a look at some of the more popular ones.
Probably the most commonly used method for connection is the Screw-in terminal block. Screw-in terminal blocks are those that use screws as the method for holding the wires.
Be careful! Over-tightening the screws can damage the wires and result in poor or potentially dangerous connections.
Another common method for wire connection is the Spring-Loaded terminal block.
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.
The Push-fit or Push-in terminal block is becoming very popular. Much like the Spring-Loaded terminal block, the “Push-fit” often requires the wire to be covered by a ferrule.
Several vendors make Push-fit terminal blocks.
A connection is made by simply inserting the wires.
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.
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