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Terminal blocks (also known as terminal strips, terminal boards or terminal blocks) are connecting modules used to distribute electrical power or electronic signals from one wiring system to another within an enclosure, and can be used in various areas of electrical engineering, such as relays, switches, motors, and other control components. As the name suggests, terminal blocks provide a connection point for two wires or cables, and can be divided into two main categories: wire to board and board to board. This article will focus on wire to board terminal blocks and their application fields and working principles.

Wire to board terminal blocks are primarily designed to accommodate two electrical wires, a short conductive blade and a male plug. The blade, often referred to as a“Pin”, is inserted into the terminal block body and the male plug is then inserted into the blade in order to connect the two wires. The connection point of the pin, plug, and wire is then secured with a screw.

Wire to board terminal blocks are categorized according to the type of activation. Push-in terminal blocks make use of a spring-loaded pin insert for a quick and easy connection without the need for tools. Screw terminal blocks on the other hand require the use of a screwdriver and manual installation, but they offer a strong mechanical joint and allow for the ease of disassembly without compromising the connection. Pin terminal blocks are also common and use pre-mounted blades and it is only necessary to insert the pin and secure it with the appropriate screwdriver.

Wire to board terminal blocks are commonly used in the automotive, industrial automation, robotics, and appliance industries in order to connect electrical signals and power sources. In the automotive industry, these blocks are usually found in fuse blocks, junction boxes, and door switches. In industrial automation, they are often used to connect switches, motors, and other control components. In robotics, they are used to assemble circuits and electrical connections for machine automation. Finally, in the appliance industry, wire to board terminal blocks are used to connect products’ energy terminals and provide an easy interface for connecting to the mains.

Wire to board terminal blocks are made from several different materials, including nylon, PA6, PPA, PPS, and phenolic. Nylon is a popular choice due to its low cost and excellent electrical insulation properties, while PA6 offers good chemical and heat resistance and is primarily used in high-power applications. PPA offers excellent chemical resistance and is fire resistant, making it a great choice for hazardous environments. PPS is also fire resistant and has excellent mechanical strength and rigidity. And finally, phenolic provides good current carrying capacity and is used in high-power applications.

Line screws are commonly used to secure connections in wire to board terminal blocks. These screws are available in various sizes, from M1.6 to M2.6, and they are usually brass or steel plated. When correctly tightened, these screws ensure good contact between the two wires and minimize the risk of electrical arcing. Washers are also used to reduce electrical resistance in the connecting types and to prevent the wires from loosening.

Wire to board terminal blocks are a simple yet effective way of connecting wires and cables in various applications. From automotive to industrial automation to robotics and even the appliances industry, these effective connector blocks offer an easy and reliable way of creating a secure connection. With the various materials and sizes available on the market, there is sure to be a terminal block suitable for any application.

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