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Terminal blocks – headers, plugs and sockets, also called terminal boards or strips, are widely used in industrial and electronic applications as components for providing electrical connections and electrical safety. The capability to optimize the design and assembly of electrical harnesses is one of the greatest advantages of using terminal blocks. This type of terminal connection is widely used because it provides convention termination needs for any electrical assembly making it easy to trace, diagnose and manage connections. In addition, terminal blocks and also the other components used with them, such as headers, plugs and sockets, offer superior vibration and shock resistance, reducing the risk of disconnection due to mechanical stress and providing reliable and cost efficient electrical connections.

A terminal block is composed of two parts: one part with terminals for the wires and another with terminals for the conductors. The terminals of the wire side are usually IDC (Insulated Disconnectable Connectors) connections, which allow a fast and reliable insulation of the wire terminals. The terminals on the conductor side are crimp connections, so as to allow a secure and reliable connection to the conductor. The conductors used in the connector are usually stranded, to reduce the stress on the conductor and improve the electrical contact.

A terminal block is also made of a receptacle, which is the actual electrical conductor through which the wire is connected to the system. This component is usually made of plastic, to maximize its holding and insulating properties. The receptacle is usually connected with a locking nut, which allows for easy and reliable connection, without risking to bend or stress the wire, which would result in short or bad contact.

In addition to the terminal blocks, headers, plugs and sockets can also be used to make electrical connections. A header is an electrical connector, usually with two or more terminals, which is screwed or inserted into a hole drilled on a printed circuit board. The header includes terminals to insert and solder wires, allowing for a reliable and easily traceable electrical connection. Plug and socket connectors, on the other hand, are designed to connect two or more electrical circuits in a very fast and reliable way, and usually have a locking mechanism to avoid accidental disconnection.

In industrial applications, terminal blocks are usually used to make connections on PLC systems and other electronic equipment, to provide a secure and reliable connection. Typical uses are in the electrical machinery, sensors, point-of-sale systems and in Robotic and Industrial Automation applications. Plugs and sockets can also be used in a variety of industrial applications, such as power strips, hot-swapping equipment, plug-in transformers and automation systems.

Terminal blocks, headers, plugs and sockets are essential components in any type of electrical harness. They provide reliable connections and easy traceability for the components used, as well as the possibility to customize and optimize assembly processes. This makes them ideal components for use in any kind of industrial application, from manufacturing, robotics, industrial automation to point-of-sale systems.

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