NEWS
03
2023
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02
How to choose a plug-in terminal block
2023-02-03
Author:
01. Before choosing the type, you should know what kind of terminal you want?
According to the function of the terminal, the classification is as follows: ordinary plug-in terminal block. Safety terminal blocks. Test the terminal block. Grounding terminal block. Double terminal blocks. Double conduction terminals. Three-layer terminal blocks. Three-layer conduction terminals. One in and double out terminals. One-in, three-out terminals. Dual in and double out terminals. Knife gate terminal. Overvoltage protection terminals. marking terminals, etc.;
CLASSIFICATION BY CURRENT: ORDINARY TERMINAL (SMALL CURRENT TERMINAL), HIGH CURRENT TERMINAL (100) A OR MORE OR 25MM LINE) AND SO ON;
According to the appearance classification is as follows: can be divided into plug-in terminals, screw terminals, fence terminals, spring terminals, rail terminals, fixed terminals, circuit board terminals. (PCB terminals), etc.
The choice of terminal blocks is nothing more than the wire diameter. Current. Wiring direction. Applications. Wiring method: equal wire diameter and current. The wiring direction generally includes front wiring and side outlet, mainly to facilitate the operation of technicians, so as to improve work efficiency. This is a very common problem, and terminal blocks have a wide range of applications. For example, you buy terminal blocks for soldering. On the PCB board, then it is impossible to choose the terminal wiring method used on the rail, which is generally docked. Dangling. Fixed and other methods. The basic composition of universal terminal blocks consists of an insulating base. Insulated partitions. Component parts, insulation base composed of one.
02.What issues need to be considered in the selection of models?
The selection mainly considers the following points:
(1) Is the wire to be connected a hard wire or a flexible wire?
(2) What is the cross-sectional area of the wire in square millimeters? (excluding thread skin)
(3) How much current and voltage does the terminal need to withstand?
(4) How many hole connectors should be selected?
Each connector, regardless of a few holes, is internally guided. Therefore, we need to connect several wires with several hole connectors. For example, the 4-hole connector Z can connect 4 wires, if only 3 wires need to be connected, then a hole can do. Because each connector is internally guided, FireWire cannot be used. Zero line. Insert the same connector into the ground wire, otherwise it will cause a short circuit. So in any case, use a line of fire, a line of zero, a wire of ground!
(5) Can the same connector connect wires of different thicknesses?
Currently, the springs of each hole of the terminal connector are independent, so that wires with different cross-sectional areas can be used reliably as long as the connector is connected
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