Plastic terminal blocks as a connector, is an important component in electric industry, plays an irreplaceable role, can not be ignored, because of engineering and technical personnel in maintenance, also from the interface check, also is the terminal blocks to start, so the terminal blocks design is particularly important.

The product design is set to: a comprehensive design standards, materials, structure,electroplating, certification, mold, and manufacturing process, the terminal blocks is no exception.

Product standard plays the guiding ideology, the copper strip terminal blocks almost allconsiderations are based on it, we design the standard terminal blocks firstly the UL and CSA as the standard, but in some electrical parameters can also be other criteria, such as high and low temperature test.

The choice of materials directly affect the performance of the product, is the key of the design, with the plastic material as an example: if UL94, V-0 flame retardant as the design basis to carefully examine the technical parameters of each material table whether the products can meet the standard, such as impulse withstand voltage and aging test whether can lead, in the hardware aspect is mainly sheeted material TP of choice is particularly important, because the press should not only meet the electrical conductivity of the(current) should have certain elasticity, brought difficulty to our engineers in selecting materials, but rather in this aspect is the connector manufacturer pursuit in the elastic component trend, many production metal material manufacturers in this effort, the conductive rate directly affect the temperature rise and the contact resistance, the chemical element, quality and material elastic modulus, hardness, tensile strength, elastic moduluswere calculated with the fourth strength theory of material mechanics formula. The contact resistance of the material conductivity is little Wen Sheng is lower, the relationship between force and contact resistance into two curves, the contact resistance is mainly divided into:compression resistance, film resistance, volume resistance (resistance conductor itself).

The terminal blocks is used to connect the wire connecting terminal blocks is convenient, it is actually asealed in plastic insulation inside the metal sheet, both ends can be inserted into the wirehole, a screw used for fastening or loosening, such as two wires, sometimes need to be connected, sometimes need to disconnect, then you can use the terminal to themconnected, and can be disconnected at any time, without the need to weld them together ortwisted together, very convenient. But for the wire interconnection of electric power industry, in a special terminal blocks, terminal box, above all is the terminal blocks, single, double, current,voltage, ordinary, can be broken and so on. A crimping area in order to ensure the reliablecontact, and guaranteed by sufficient current.

As the industry increasingly high degree of automation and industrial control requirements become more stringent, accurate, terminal consumption rising. With the development of electronic industry, the use of more and more terminal blocks, and more and more species. At present, the most widely used in addition to the PCB board terminal terminal blocks, and terminal blocks hardware,screw terminal blocks, the spring terminal blocks etc..