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Terminal Blocks –Headers, Plugs and Sockets

Terminal blocks, also referred to as headers, plugs and sockets, are electric and electronic components commonly used in electronic circuits. They are designed to be disconnected or re-connected easily. Terminal blocks are available in sizes which range from less than an inch, to a few inches, with current ratings of 15 amps, to over 150 amps.

The main purpose of using a terminal block is to provide a compact way to rapidly connect and disconnect electrical circuits. Terminal blocks are used in a variety of electrical applications, from simple home electronics projects, to large scale industrial installations.

Terminal blocks are typically divided into two major categories:

• Automatic reconnectable – These terminal blocks, also referred to as pluggable or modular, are singles or multi-way units that enable easy interconnected circuits and fast installation. They can also be used to re-route existing circuits, or to add new circuits.
• Non-reconnectable – This type of terminal block features a variety of terminal types and sizes that provide reliable and secure power and data connections. Some examples include universal terminals, insulated terminals, and twist-on terminals.

Automatic reconnectable terminal blocks come in a variety of styles and configurations. The two most common are types are pins and sockets. Pins are typically used to connect multiple power or data sources, while sockets are used to connect to individual devices.

These terminal blocks are constructed with a series of copper or brass pins or sockets that contain solid insulated connectors. These connectors are made of a hard, thick plastic material that can withstand high temperatures and resist corrosion. They also have a strain relief tab used to ensure the connections remain secure.

The working principle of most automatic reconnectable terminal blocks is fairly simple. When the pins and sockets are pushed together, they create electrical contact between the connected devices. This contact is maintained as long as the pins and sockets remain in contact with each other. Once the pins and sockets are separated, the electrical connection is broken.

Terminal blocks are essential components of most electrical or electronic circuits. They provide a reliable, easy-to-use system for quickly and securely connecting two or more devices. With their wide range of styles and configurations, terminal blocks are the go-to solution for a variety of applications.

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