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Terminal Blocks – Headers, Plugs and Sockets 1633530000

Terminal blocks, headers, plugs and sockets are components popularly used in electrical and electronic wiring systems. The purpose of such terminals is usually to transfer/distribute power and establish electrical connections between different components. There are various types of terminal blocks, primarily depending upon the application they are used for. These come in different sizes, shapes and configurations that can range from 2 to 6 pins (or a larger number) in accordance with their application. Some of the common types of these terminals mainly depend upon their voltage rating, environmental safety and physical size.

Types of Terminal Blocks

1. Standard Screw Style Terminal Blocks – These are highly reliable, low cost terminal blocks with a contact mechanism consisting of a flat-head screw on one side and a captive conductor on the other side. The screw is designed to adjust the spring pressure of the captive conductor so that it makes effective electrical contact with the screw head.

2. Barrier Style Terminal Blocks – These blocks feature a barrier material such as plastic or metal that separates the terminals from one another, thus creating an electrical barrier between the terminals. They are available in both insulated and non-insulated forms. Barrier style terminal blocks are commonly used for high voltage applications where there is a need to reduce the risk of short circuits.

3. Plug and Socket Connectors – These are essentially connectors designed for mating two cables either side-by-side or end-to-end. The plug part is often connected to the cable and the socket part is connected to the terminal block or board. Standard screw type terminal blocks can also be used in this application.

Working Principle of Terminal Blocks, Headers, Plugs and Sockets

The working principle of terminal blocks, headers, plugs and sockets is quite simple. The terminal block is connected to the wall outlet or power supply. The conductor connecting the terminal block is then connected to the device which is being powered. The voltage and current of the power supply is used to energize the devices connected to the terminal block.

The plug and socket connectors are the most typical example of this working principle. The plug is connected to the outlet or power supply while the socket is connected to the device. As the socket is inserted into the plug, the contact points in the plug and socket make an electrical connection and the device is powered.

Application of Terminal Blocks, Headers, Plugs and Sockets

Terminal blocks, headers, plugs and sockets are widely used in electrical and electronic systems. The connectors can be used to connect harness assemblies, HV and LV wires, terminals and conduit. The connectors can be used to build power or control systems and panel boards. They can also be used to make continuous or discontinuous connections.

Screw terminals are commonly used in domestic and industrial applications for connecting power and control wiring. These days, they are increasingly finding applications in high temperature, high voltage and hazardous locations.

Barrier style terminal blocks are mainly used for connecting high voltage systems where there is a need to reduce the risk of short circuits. In these cases, the connectors need to offer an effective barrier between adjacent terminals.

Plug and socket connectors are the most popular type of connectors for connecting cables and devices. These connectors are also widely used in telecom and data communications.

Conclusion

Terminal Blocks, headers, plugs and sockets are essential components used in electrical and electronic wiring systems. The primary purpose of these terminals is to establish electrical connections between different components and to distribute power. They are available in different shapes, sizes and configurations that can range from 2 to 6 pins, thereby making it possible to cater to different applications and voltage requirements. The working principle of the connectors is quite straightforward, and they are known for their reliable electrical connections. Terminal Blocks, headers, plugs and sockets are commonly used in domestic and industrial power, and control applications.

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