The function of the plug-in terminal:
The pluggable terminal block series uses a combination of easy-to-operate pluggable connections and a firm and universal screw method to connect various parts. The plug-in terminal block is made up of two parts plug-in connection, one part presses the wire, and then plugs into the other part, which is soldered to the PCB board. This is the mechanical principle of the bottom, and this anti-vibration design ensures the long-term airtight connection of the product and the usability of the finished product. Mounting ears can be added at both ends of the socket. The mounting ears can protect the tabs to a large extent and prevent the tabs from being poorly arranged. At the same time, this socket design allows the socket to be correctly inserted into the mother body.
Frequently Asked Questions about Pluggable Terminal Blocks:
Various problems often occur during the use of plug-in terminals.

Problems that lead to burning black:
If the plug-in terminal is black, one of the possibilities is not burning black, but oxidation may also be black. So how to verify whether it is burnt black? The method we take is to wipe it with a finger. If it can be wiped off, like soot, it is a black substance formed by oxidation, and it can only be ground off with sandpaper or a file.
Problems that cause high temperatures
There are two possibilities: the contact resistance of the plug-in terminals is too large, resulting in overheating; the terminals are not loose, but the circuit is over-current and heated for some unknown reason, such as the power supply voltage is too high, or the load is short-circuited.
1. The voltage is too high. It can be checked from the source, the secondary voltage of the transformer - the voltage in the distribution box - the voltage of each electrical equipment.
2. Ground fault. It can also be checked from the transformer, and then grounded to the distribution box. The grounded one should be grounded, and the normal phase line should be excluded from the ground fault. You can use an insulation meter or a shaker to measure when the power is off, and measure in sections. Try to measure only the power supply and distribution lines such as cables, wires, circuit breakers, switches, etc. in sections. If it is difficult to section, unplug the weak current equipment, Fuses for sensing devices.
The key to grounding is that the grounding resistance should be low and the contact area should be large. In the former, the grounding point can have a "zero potential" as low as possible close to the ground potential, which can avoid the possibility that the lightning "reverses" from the grounding wire and enters the power supply circuit after a thunderstorm. The latter can have sufficient capacity to provide a fault current path, including lightning or short-circuit faults, etc. Because the actual construction process has theoretically changed according to the changes of contemporary technology and technology, whether this grounding method is feasible or not depends on how the new standard specification is stipulated.

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