The terminal is the part of the battery connected with the external conductor. In Electrotechnics, terminals refer to wiring terminals, also known as wiring terminals. The types are divided into single hole, double hole, socket, hook, etc. from materials, copper silver plating, copper zinc plating, copper, aluminum, iron, etc. They are mainly used to transmit electrical signals or conduct electricity.

    In the face of terminal selection, we are willing to think about the wire diameter, current, wiring direction, application occasions, wiring mode, etc. the wire diameter and current are the wire diameter and rated current. In addition, the wiring direction generally has front and side outgoing lines, which is mainly designed to facilitate the operation of technical personnel, so as to improve the efficiency of application. The application range of terminal block is wide. For example, the purchased terminal block is for welding on PCB circuit board, so you can't choose the connection mode of terminal block used on the guide rail. Generally, there are docking, hanging, fixing and other modes. The basic composition of general terminal block is composed of insulation base, insulation partition, wire parts, and insulation base.

    Under different environmental conditions, there are certain rules to be found in the correct selection and use of terminal blocks. Although there is no specific use system in the industry, specific terminals can be selected according to specific use environment and conditions. There are four basic principles for reference.

    First of all, you need to know what kind of terminal you want before you fix the terminal. According to the function classification of the terminal, there are general terminal, safety terminal, test terminal, grounding terminal, double-layer terminal, double-layer conduction terminal, three-layer conduction terminal, one in and two out terminal, one in and three out terminal, double in and two out terminal, knife gate terminal, over-voltage protection terminal, marking terminal, etc. 。 According to the current classification, it can be divided into ordinary terminals (small current terminals) and large current terminals (over 100A or over 25mm wires). Classification by shape. It can be divided into rail type terminal fixed terminal board terminal (PCB terminal), etc.

    Secondly, we need to consider the size of the wiring. For different terminals, their size and wiring range are different. Generally, when using terminals, it is better to choose a slightly larger wiring range than the actual wire diameter. Due to the confusion of current market standards, if the connection aperture of the same size as the wire diameter is selected, it is possible that the wiring range will be smaller due to the terminals produced by the market that do not meet the standards, and the wire cannot be inserted into the crimping frame.

    Thirdly, the current. For the guide rail terminal, which has existed in the market for decades, the industry has provisions for the current. Different models have specific current specifications. The product must meet or exceed this standard.

    Finally, the amount of space used. Different terminals can be selected for different space sizes. For example, in a narrow space, you can choose a double-layer terminal, or a three-layer terminal.