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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks (also known as “polycones”, “junction blocks”, “screw connectors” or “splice blocks”) are used to make electrical connections in electronics projects, and are an essential component of any robotics board. Terminal blocks are devices used to split a power supply up into multiple sections or to make electrical connections between an electrical supply and an electrical load. There are many types of terminal blocks available, including headers, plugs, and sockets.

Headers

Headers, the most common type of terminal blocks, are designed to link two electrical circuits together. They typically have a center screw holding the two pin strips together, or side screws that tighten them against each other. Headers are available in a variety of shapes, sizes, and configurations, allowing them to be used for different purposes. For example, some headers are designed with two leads for connecting wires, while others can accommodate multiple wires.

Plugs and Sockets

Plugs and sockets (also known as jacks, banana plugs, and banana jack plugs) provide electrical connections between devices. Plugs are the ends that are inserted into a socket or an outlet, while sockets are the receiving end of the connection. Both plugs and sockets come in a variety of shapes and configurations, allowing them to be used in different appliactions. For example, some have screw terminals, while others have spring terminals or locking tabs. Plugs and sockets also come in different sizes, ranging from 1/8th to 3.8 inches in diameter.

Application Field and Working Principle

Terminal blocks can be used in a variety of applications, including industrial control, networking, automotive, lighting, energy, telecommunications, security systems, and circuit protection. Terminal blocks are also widely used in the home, providing connections for low-voltage wiring between switches and circuit breakers. Depending on the type of terminal block, the working principle and connection method can vary. For example, connecting with a header requires a screwdriver to tighten the components, while connecting with a plug or socket typically requires pushing the connecter into the socket.

Terminal blocks are a must-have for any electronics project. They provide a reliable and secure connection between two points and are available in a wide range of styles and configurations to suit any application.

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