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Terminal blocks are a form of high-quality wiring and electrical connection for use in applications that require electrical connection between circuits. They serve a multitude of functions and are available in a variety of sizes and materials to meet many unique wiring needs. The main components of a terminal block include the terminal head and the terminal plug. This article will discuss the various types of terminal blocks, their application field and working principle.

Plug Type Terminal Blocks

Plug type terminal blocks are the most commonly used form of terminal blocks due to their ease of operation and the fact that they can be quickly and easily connected and disconnected from a wiring system. Plug type terminal blocks typically consist of a plug-in head, a connecting pin, and a connector body. The plug-in head allows electricity to pass through it from a wiring system, and the connecting pin allows a circuit to be connected to a power source. The terminal block is then secured to the connector body with a nut or other securing device.

Jumpers

Jumpers are a type of terminal block used when direct electrical connection is required between two circuits. For example, if two wires need to be connected in a wiring system, a jumper can be used to bridge the connection. Jumpers come in all sizes and shapes, ranging from short jumpers for short distance connections to long jumpers for long distance connections. The majority of jumpers use a single connecting bar to bridge the two points of connection, but there are some jumpers that feature a pair of connecting bars for longer distance connections.

Headers and Sockets

Headers and sockets are two different types of terminal blocks that are used in the same application. Headers are typically used with wiring systems that require multiple connections. For example, in a RJ45 wiring system, the RJ45 plug, with its eight pins, are generally soldered or crimped onto a header. Headers also come in various sizes and shapes, such as round and rectangular, to accommodate a variety of need. The other type of terminal block used in this type of system is a socket. Sockets are usually soldered or crimped onto a single chip that can then be plugged into the header. Some variation of sockets are available for different chip sizes, and some sockets also feature a locking mechanism that prevents the chip from slipping out of the header.

Working Principle

The working principle of terminal blocks is relatively simple. The electricity passes through the plug-in head and is transmitted down the connecting pin to the terminal block. The electricity then flows from the terminal block to the sockets or jumpers, which can then be used to connect the two wires or circuits. In some cases, the wire or cable is also connected directly to the terminal block. The electricity then passes through the wire or cable to the device or circuit.

Conclusion

Terminal blocks are an essential part of any wiring system and come in a variety of sizes and materials to meet the needs of many applications. Plug type terminal blocks are the most commonly used type and feature a plug-in head, a connecting pin, and a connector body. Jumpers are used when a direct electrical connection is required between two different circuits, and headers and sockets are used when multiple connections are needed on one circuit. The working principle of all terminal blocks is relatively simple and allows for quick and easy electrical connection.

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