The classification of terminals can be distinguished in several ways. There are three common methods at present. According to the terminal raw materials, such as copper terminals, according to the terminal function, such as printed circuit board terminals, the last category is more familiar to the market. Category 1, plug-in Terminal Block The PLTB series terminal block is made up of two parts plug-in connection, one part presses the wire, and then plugs into the other part, which is soldered to the PCB board. The mechanical principle of the bottom connection and the anti-vibration design ensure the long-term airtight connection of the product and the reliability of the finished product. Mounting ears can be added at both ends of the socket. The mounting ears can protect the tabs to a large extent and prevent the tabs from being arranged in a bad position. At the same time, this socket design can ensure that the socket can be correctly inserted into the mother body. Receptacles can also have assembly snaps and locking snaps. Guang Dongen said that the assembly buckle can be more firmly fixed to the PCB board, and the locking buckle can lock the mother body and the socket after the installation is completed. A wide variety of socket designs can be used with different mating insertion methods. Available in both metric and standard wire gauges, it is the best-selling terminal type on the market today. Category 2, Barrier Terminal Blocks BRTB series terminal block adopts the pressure plate design, which makes this series of products have a wide range of pressure lines and realizes safe, reliable and effective connection, especially in the use environment of high current and high voltage. It is widely used. Category 3, spring-loaded terminals It is a new type of terminal using a spring device and has been widely used in the world's electrical and electronic engineering industries: lighting, elevator control, instrumentation, power, chemistry and automotive power. Category 4, rail terminal block The use of crimping wire and unique thread self-locking design makes the wiring connection reliable and safe. The design of this series of terminal blocks is beautiful and elegant, and can be equipped with a variety of accessories, such as short-circuit strips, identification strips, baffles, etc.
Category 5, through-type terminals DSTB series terminal block adopts reliable screw connection technology, with one in and one out, one in and two out, and two in and two out wiring methods, which are widely used in new energy, commercial induction cooker, power supply and other fields. Category 6, through-the-wall terminals The screw connection wire technology is adopted, the insulating material is PA66 (flame retardant grade: U L94, V-0), and the connector is made of high-quality high-conductive metal material. The through-wall terminals can be installed side by side on panels with thicknesses ranging from 1mm to 10mm, and can automatically compensate and adjust the thickness of the panel to form any series of terminal blocks, and isolation plates can be used to increase air gaps and creepage distances. The Through-wall Terminal block can be firmly installed in the rectangular reserved hole on the panel without any tools, and the installation is extremely convenient. Control cabinets and other electronic equipment. With good insulation performance and high protection level, users only need to directly connect the external wiring to work, eliminating many unnecessary wiring steps. Guang Dongen said that the insulating material of QCTB series terminals is modified nylon (PA66), which has good electrical and mechanical properties. The screw is made of high-strength copper alloy, the conductor is made of electrolytic copper, and the wire frame is made of alloy copper that is resistant to stress crack corrosion. These metal surfaces are also protected by tin or nickel plating. All-copper terminal blocks avoid the battery effect of steel metal parts and copper conductors in wet environments. There is a connection hole in the middle of the terminal, which can be connected by the center or by the side plug connector; it can be connected to Electrical Connection products with a 4mm2 wire voltage of 800V and a current of 41A. Terminal selection The selection of terminals is nothing more than wire diameter, current , wiring direction, application occasion, wiring method and other wire diameter and current, not to mention here, that is, the size of wire diameter and rated current.
