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Terminal blocks are used in a wide variety of applications in order to create electrical wiring and connections. They are used for wiring operations of energy distribution, signal control, and protection of the electrical system. They also provide protection against electric shocks and short circuits. Terminal blocks come in two basic categories - headers, plugs and sockets.

Header terminal blocks are designed to accommodate incoming or outgoing wires which may be inserted into the female side of the terminal. They allow for organized wiring of electrical devices and provide some degree of protection against accidental shorts. Headers can be mounted on PCBs, DIN-rails or flat surface and can be placed within a closed casing.

Plug terminal blocks are designed for electrical power distribution between two different locations. They are available in various size and are connected to each other in an alternating loop configuration. The plug is a cylindrical piece of plastic or metal which fits into a specialized connector and provides an secure electrical connection between two power points.

Socket terminal blocks are the most common type of electric connection, used in many industrial and consumer applications. They are designed to connect two electrical contacts which are wired together. Socket terminal blocks include a female side which is screwed onto the power line or wiring harness and a contact pins which are inserted into the female side. Socket terminal blocks enable the connection of wires to the device and allow for easy and secure transferring of energy or information.

While all of these terminal blocks are suitable for use in different applications and provide a secure connection, they have different working principles. Header terminal blocks work by connecting wires within a closed casing, which keeps the electrical connection safe from external interference. Plug terminal blocks use a cylindrical form factor and contact pins to ensure a reliable connection between two power points. Socket terminal blocks are the most common type of electrical connection and provide an easy and secure transferring of energy or information.

Although there are numerous applications for terminal blocks, their primary purpose is to provide a reliable, secure and robust connection between electrical devices. Therefore, it is important to choose the right type of terminal block for the application. By using the correct type of socket, plug or header terminal blocks, it is possible to increase the reliability and safety of electrical systems.

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