Terminal type, there are several terminal types

Nov 15 , 2023

cable connector block is an electrical component used to connect wires, usually consisting of two parts, one is a conductive part, and the other is a housing that holds and protects the wires. It can connect wires to other electrical equipment or electrical wiring so that the circuit works properly.

terminal block cover is a kind of accessory product used to achieve electrical connection, which is divided into the category of connectors in industry. With the increasing degree of industrial automation and the increasingly strict and precise requirements of industrial control, the amount of terminal blocks has gradually increased. With the development of the electronics industry, more and more terminals are used, and more and more types are available. In addition to the most widely used PCB board terminals, there are hardware terminals, nut terminals, spring terminals and so on.


types of terminal blocks

Type A: The two ends are connected and the reinforcing plate is pasted on the insulating adhesive paper;

Type B: The reinforcing plate is directly pasted on the insulating adhesive paper;

Type C: The reinforcing plate at both ends is directly pasted on the conductor;

Type D: both ends of the reinforcing plate cross directly pasted on the conductor; Foshan terminal wire

Type E: one end of the reinforcing board is attached to the insulating adhesive paper, and the other end is directly soldered.

F type: the two ends of the reinforcing board is directly attached to the insulating adhesive paper, and the inner half is peeled off;


There are several types of terminals

1. Plug and pull type

It is connected by two parts, one part presses the wire tightly, and then inserts it into the other part, which is welded to the PCB board. The mechanical principle of the bottom of the connection and the anti-vibration design ensure the long-term airtight connection of the product and the reliability of the finished product. The socket can be equipped with assembly ears at both ends, which can protect the connector to a large extent and prevent the connector from being arranged in a poor position, and the socket design can ensure that the socket can be correctly inserted into the parent. Sockets may also have assembly and locking clasps. The assembly buckle provides a more stable fix to the PCB board, and the lock buckle locks the body and socket after installation. A variety of socket designs can be matched with different maternal insertion methods, such as: horizontal, vertical or inclined to the printed circuit board, etc., can be selected according to customer requirements in different ways. You can choose either metric wire gauge or standard wire gauge, is currently the most popular terminal type on the market.

2. Fence type

It is able to achieve a safe, reliable and effective connection, especially in the use of high current, high voltage environment is widely used.

3. Spring type

It is a new type of terminal using spring devices, which has been widely used in the world's electrical and electronic engineering industry: lighting, elevator lift control, instrumentation, power supply, chemical and automotive power.

4, track mounting type

Using reliable thread connection technology, electronic tolerance technology and the latest electrical connection technology, widely used in power electronics, communications, electrical control and power supply fields.

5. Track type

The wire and unique thread self-locking design make the connection reliable and safe. This series terminal design is beautiful and generous, can be equipped with a variety of accessories, such as short circuit sheet, sign strip, baffle and so on.

6, H type through the wall

The screw connection wire technology is used, the insulation material is PA66 (flame retardant grade: UL94, V-0), and the connector is made of high-quality, highly conductive metal materials.

H-type through-wall terminals can be mounted side-by-side on a panel with a thickness of 1mm to 10mm, which automatically compensates the distance of adjusting the thickness of the panel to form a terminal block with any number of poles, and an isolation plate can be used to increase the air gap and creepage distance. Without any tools, the through-wall terminal can be firmly installed in the rectangular reserved hole on the panel, which is extremely convenient to install.

H-type through-wall terminal (H terminal) is widely used in some applications that require through-wall solutions: power supplies, filters, electrical control cabinets and other electronic equipment. The insulation performance is good, the protection level is high, and the user only needs to work directly after the external wiring, eliminating many unnecessary wiring steps. WUK series terminal insulation material with modified nylon (PA66), with good electrical and mechanical properties. The screws are made of high-strength copper alloy, the electrical conductors are made of electrolytic copper, and the wire frames are made of stress-crack corrosion-resistant alloy copper. These metals are also protected by tinning or nickel plating. All copper terminals can avoid the battery effect of steel metal parts and copper wires in wet environments. There is a connecting hole in the middle of the terminal, and the center connection can be connected or the side insert connector can be connected; Can be connected to 4mm2 wire voltage 800V current 41A electrical connection products.

7. WMSTB series

The insulation material of PCB terminal is modified imported nylon (PA66), which has good electrical and mechanical properties, the conductive body is made of electrolytic copper, and the wire frame is made of alloy copper which is resistant to stress crack corrosion. The metal surface is also protected by tin or nickel plating. Whether you need a hard wire to be connected to a hard wire, a hard wire to be connected to a multiple strand, or a multiple strand to be connected to a multiple strand.

8. Safety terminal

The insulating material is made of modified nylon (PA66), which has good electrical and mechanical properties. The screws are made of high-strength copper alloy, the electrical conductors are made of electrolytic copper, and the wire frames are made of stress-crack corrosion-resistant alloy copper. These metals are also protected by tinning or nickel plating. All copper terminals can avoid the battery effect of steel metal parts and copper wires in wet environments. There is a connecting hole in the middle of the terminal, and the center connection can be connected or the side insert connector can be connected; Electrical products with 4mm2 wire voltage of 800V and current of 41A can be connected.

9. Test terminal

The sliding metal part that plays the role of switch can withstand the maximum working current through the terminal press wire frame. When switching, loosen the screw with a screwdriver, move the slider, and the switch position is clear; The test socket is provided at both ends, and the connection test can be carried out with the corresponding test end, and the operation can be interrupted when the current is measured. It can be connected to the control loop with voltage of 660V and current of 57A.

10, UK general type (UK terminal)

The color is gray, can be installed on the U or G rail, double-layer terminal with the general type terminal in the same position on twice the wiring capacity, the upper and lower two layers in the design staggered 2.5mm space, not only in the visual order, while in the upper wiring case, the screwdriver can be in the lower area is very convenient wiring operation, and the mark is clear.





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