How to buy terminal blocks
The quality of the terminal is determined by the plastic insulating material and the conductive parts, which respectively determine the insulating and conductive properties of the terminal. The failure of any terminal will pose a great threat to the owner's personal and property safety. Similar bitter lessons have happened at home and abroad.
In recent years, with the vigorous development of China's decoration industry, as an indispensable electrical connection terminal, it has been widely used. This also makes terminal manufacturers sprung up like bamboo shoots after a rain.
1. Appearance
High-quality wiring terminals should first have good workmanship. If the visual inspection fails, there is basically no need to waste time to conduct electrical tests. So, what kind of terminal block is considered to be of good workmanship? The editor believes that the qualified terminal should have no deformation on the whole, with a smooth surface, no scratches, no burrs at the corners, and uniform wall thickness.
2. Material
The first is the plastic parts, which must have good flame retardancy. The simple test method is to ignite with an open flame. The plastic parts leave the open flame to extinguish, which means that the terminal has good flame retardancy.
3. Insertion and extraction force
The plug and the needle seat have a high degree of fit, and there is no excessive or low insertion force.
At present, domestic brands have a certain gap with foreign brands in terms of technology, processing and manufacturing, industrial design, etc. or in terms of financial strength. Without reliable wiring terminals, our life and property safety cannot be well protected.
Classification of terminal
Terminals can be roughly divided into: plug-in terminal series, European terminal series, barrier terminal series, spring terminal series, track terminal series, through-wall terminal series, etc.
Many devices in daily life often need wiring terminals to be connected to them. Only after connection can they play a role in transmission, especially in the electrical field, wiring terminals are particularly important.
As a kind of connector, terminal block is an important component in the electrical industry and plays an irreplaceable role. When selecting the terminal blocks, engineers and technicians must carefully select the terminal blocks suitable for their products to ensure the normal operation of the products.
The selection method of the terminal block is introduced for everyone. You must remember that you must not be greedy for cheap when choosing a terminal block, so as to avoid things that make us regret for a lifetime.
