Terminal block is an accessory product used to realize electrical connection, which is divided into the category of connector in industry. It is actually a piece of metal sealed in insulating plastic. There are holes at both ends to insert wires, and screws are used to fasten or loosen them. For example, two wires need to be connected sometimes and sometimes need to be disconnected. They can be connected with terminals and disconnected at any time without having to solder them or twist them together, which is quick and easy. And it is suitable for a large number of wire interconnections. In the power industry, there are special terminal blocks and terminal boxes, all of which are terminal blocks, single-layer, double-layer, current, voltage, common, breakable, etc. A certain crimping area is to ensure reliable contact and to ensure that enough current can pass.
When choosing a terminal block, the following factors should be considered:
1. Power factor
The power factor mainly considers the current, voltage and power of the terminal. According to the size of the load current and voltage, select the corresponding grade and leave the space for the terminal.
2. Wiring size
For different terminals, their size and wiring range are different. Usually, when using terminals, it is better to choose a wiring range slightly larger than the actual wire diameter. Because the current market standards are confusing, if you choose the same size of wire diameter as the wire diameter, it is possible that the wire can not be inserted into the crimping box because the terminal does not meet the standard production, resulting in a narrow wiring range.
3. The amount of space used
Different terminals can be selected for different space sizes. For example, in a small space, you can choose a double-layer terminal block or a three-layer terminal block.
4. Environmental factors
Environmental factors mainly consider the convenience of the operator and the environmental requirements of the equipment itself. Easy to operate, reduce labor intensity and improve work efficiency are the aspirations that everyone pursues. For the environment where the equipment is located, such as whether the vibration frequency is too large, whether the dust is too large, etc., you can choose the corresponding wiring terminal.