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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks, headers, plugs and sockets are components used to connect two or more electrical or electronic devices. They provide a quick, easy and reliable way to join together a variety of wires and cables. Used in a variety of industries, these devices are essential for system integration and the transfer of low- or high-power signals in industrial Automation and IoT applications.

Types of Terminal Blocks

Terminal blocks are classified by their operational characteristics. There are three main types of terminal blocks: modular, feed-through, and output terminal blocks.

• Modular terminal blocks operate at low voltage levels and can be used when signals need to be exchanged quickly, such as in accessories, lighting, and audio systems. They are available in various sizes and shapes.
• Feed-through terminal blocks are designed for high-voltage applications, such as AC power, motor control, and circuit breaker systems, as well as in off-grid applications. They feature two- or three-screw lugs that provide a wide connection range.
• Output terminal blocks are used with outputs from a programmable logic controller (PLC) or process controller and are designed for fast-interconnect applications. It features spring contact tensioning that ensures reliable connection.

Headers & Plugs

Headers and plugs are used for the connection of powerlines, coaxial cables, and modern internal wiring techniques. Headers are used with either plug-in or snap-in connectors, while plugs, on the other hand, fit into the connectors to complete the electrical connection. There are two types of headers and plugs: polarized and non-polarized. For polarized headers and plugs, the connector must be oriented in the correct direction in order to fit into the connection.

Sockets

Sockets are connectors used to receive signals from transducers and other electronic devices. Sockets provide higher contact reliability than plugs due to their spring contact concept. They are commonly used in industrial applications, such as process control, motor control, and instrumentation systems. There are various types of sockets, such as dual-in-line, surface mount, and dual-in-line with soft shroud.

193130800 Application Field and Working Principle

Terminal blocks, headers, plugs and sockets are widely used in a variety of applications, such as automotive, industrial automation, consumer electronics, medical, and aerospace. They are widely used to power and signal devices, as well as to provide electrical connections between two or more electrical or electronic components. The working principle of these devices is that they provide a quick, easy and reliable way to join together the wires, cables, and electronic components.

Terminal blocks are available in different shapes and sizes to accommodate various types of cables. Headers and plugs can be used to connect powerlines, or modern internal wiring techniques, while sockets are used to receive signals from transducers and other electronic devices. Depending on the application, the connectors can be polarized or non-polarized.

Terminal blocks, headers, plugs and sockets provide a fast and reliable way to make electrical connections between components. They provide safe and reliable operation in a variety of industrial applications, such as automotive, industrial automation, consumer electronics, medical, and aerospace.

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