What are terminal blocks?





We will see all kinds of electronic components in electrical appliances, but non-professionals will not be able to distinguish the functions of the components inside. Among them, the terminal block is one of them, which plays an important role in electrical appliances. Next, let's take a look at some features of the terminal block!
Terminal block is an accessory product used to realize electrical connection, which is divided into the category of connector in industry. It is used to facilitate the connection of wires. It is actually a piece of metal enclosed in insulating plastic. There are holes at both ends to insert wires.
There are screws for tightening or loosening, such as two wires that sometimes need to be connected and sometimes need to be disconnected, then they can be connected with terminals and disconnected at any time without having to solder or wrap them Together, it is very convenient and fast. And it is suitable for a large number of wire interconnections. In the power industry, there are special terminal blocks and terminal boxes, all of which are terminal blocks, single-layer, double-layer, current, voltage, common, breakable, etc.
The terminal block has the following characteristics:
1. Reliable contact
The metal conductor inside the terminal is the core part of the terminal, which transmits the voltage, current or signal from the external wire or cable to the corresponding contact of the matching connector. Therefore, the contacts must have excellent structure, stable and reliable contact retention and good electrical conductivity.
2 Reliable insulation
The function of the insulator is to keep the contacts in the correct position, and to insulate the contacts from each other, and between the contacts and the housing. Therefore, the insulating parts must have excellent electrical properties, mechanical properties and process forming properties. Especially with the widespread use of high-density, miniaturized terminals, the effective wall thickness of the insulator is getting thinner and thinner. This puts forward more stringent requirements for insulation materials, injection mold precision and molding process.
3. Fixed and reliable
The insulator not only acts as insulation, but also usually provides precise alignment and protection for the protruding contacts, and also has the functions of installation and positioning, locking and fixing on the equipment.
With the development of the electronics industry, the use of terminal blocks has become wider and wider.
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