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Headers, Plugs and Sockets

Terminal blocks, also known as terminal boards or headers, plugs and sockets, are an array of electrical connectors designed to connect two electrical circuits together. They can be used to connect two or more electrical components together, or to simply bridge the gap between two or more electrical conductors. These terminal blocks can be made from either rigid or flexible materials, and can be installed in a variety of locations, including on walls, in boxes, or in other electrical equipment.

When it comes to the electric circuits, terminal blocks are essentially a way of connecting two or more circuits together securely. They are commonly used to join together two wires of different sizes and shapes, or to create an electrical connection between two components. The most common types of terminal blocks include screw-in, spring-loaded, bi-metallic and pin and socket types.

Application Fields

Terminal blocks, plug and sockets are used in a wide range of industries and applications. The main application fields are:

• Industrial applications - As an interface between simple pieces of machinery and control systems. This can range from high end industrial control systems with automated switch gear as well as low voltage, low current applications.
• Medical and biomedical applications - Some of the most common applications for terminal blocks are patient monitoring, blood pressure monitoring and medical alarm systems.
• Automotive applications - They are used in a variety of engines, brakes and fuel systems as well as in airbag systems and in automotive audio systems.
• Home applications - In residential and commercial buildings, terminal blocks are used in HVAC systems, wiring devices and thermostats.
• General-purpose applications - They are designed for use in a variety of applications from general wiring needs to power supplies.

Working Principle

When a terminal block is connected together, a complete circuit is formed in which current can flow. Electrical current is conducted across the board when two electrical contacts, or “pins”, on the board are connected. The current flows through the pins and is conducted to different components connected to the terminal block, such as motors and other devices.

The design and construction of terminal blocks vary depending on the application and type. Generally, they consist of two parts, a “base” and a “terminal” portion. The “base” portion is usually made of plastic, while the “terminal” portion is usually made of metal. The base portion serves as an insulation layer and a means of mounting the terminals onto a surface. The terminal portion has metal pins which act as the electrical connection points.

Terminal blocks also feature a “locking” mechanism which helps to secure the connections from mechanical strain or accidental disconnection. This locking mechanism can be either mechanical or electromechanical and helps to ensure that the electrical connections are secure and reliable. They can also prevent accidental contact with the electrical current which could cause an electrical shock.

Conclusion

Terminal blocks, plugs and sockets are an integral part of any electrical circuit. They are used to join together two wires of different sizes and shapes, or to create an electrical connection between two components. There are a variety of types of terminal blocks available to suit different applications, from industrial control systems to residential wiring. The terminal blocks feature an insulation layer and a locking mechanism which helps to secure the connections from mechanical strain or accidental disconnection.

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