Types of junction boxes and advantages and disadvantages of junction boxes

Lead: Today, Tutu tells you about the junction box. Everyone knows that the junction box is an indispensable electrical materials accessory in our decoration. At present, there are several classifications of wire boxes in the market. There are many junction boxes with different uses in the market. Of course, their prices are also different. Today, Tutu mainly introduces the types of wire boxes to everyone. The following rabbit will give you a detailed introduction.

Types of junction boxes currently on the market:

The first category: traditional type. Structural features: An electric terminal (slider) is arranged in the shell with an opening on the back, each bus bar of the electric energy output end of the solar cell template is electrically connected with each input end (power distribution hole) of the corresponding electric terminal, and the cable extends into the shell through the hole on one side of the shell and is electrically connected with the output hole on the other side of the electric terminal. Advantages: clamping connection, quick operation and convenient maintenance.

Disadvantages: Due to the existence of electrical terminals, the junction box is bulky and has poor heat dissipation. Cable holes in the shell will reduce the waterproof performance of the product. Line contact connection, small conductive area, unreliable connection.

The second category: small and compact sealing rubber. Advantages: due to the soldering method of sheet metal terminal, it is small in size and has better heat dissipation and stability. It has better waterproof and dustproof performance due to sealing with glue. Provide a more flexible connection scheme. According to different needs, you can use two ways: sealing glue and not sealing glue. Disadvantages: once there is a problem after sealing, it is inconvenient to maintain.

Category III: Special type of glass curtain wall. Advantages: Because the low-power photovoltaic panel is used, the box body is made more compact and exquisite, which will not affect the indoor lighting and beauty. The same is the design of sealant, which has good thermal conductivity, stability and waterproof and dustproof performance.

Disadvantages: Because of the welding connection, the cable extends into the box through the outlet holes on both sides, which is very inconvenient to weld to the metal terminals in the long and narrow box. LY0803- 1 junction box adopts the form of insert in structure, which avoids the above problem of inconvenient processing.

Analysis on the difference between junction box and junction box;

The junction box is used as a box for line transition connection, jumper connection and cross connection, and wiring terminals are installed inside;

Distribution box: As a power distribution device, it can protect lines and electrical equipment, with or without independent terminals, but there must be devices such as switches or fuses to distribute incoming power to more than two electrical equipment.

Occasionally, the junction box is used to distribute 1 power to more than 2 channels, but this usage can not provide protection for line equipment, so it is rare.

Really? Junction box terminals are used to facilitate the connection of wires. It is actually a piece of metal wrapped in insulating plastic, with holes at both ends for inserting wires and screws for fastening or loosening. For example, two wires sometimes need to be connected and sometimes disconnected, so they can be connected and disconnected with terminals at any time without welding or winding together, which is very convenient and fast. In addition, it is suitable for the interconnection of a large number of wires. There are special terminal boards and junction boxes in the power industry, which are all terminal blocks, single-layer, double-layer, current, voltage, ordinary, fragile and so on. A certain crimping area is to ensure reliable contact and sufficient current.

Junction box (terminal box): a box for line transition connection, jumper connection and cross connection, in which the terminal is installed; ? Distribution box: As a power distribution device, it can protect lines and electrical equipment, with or without independent terminals, but there must be devices such as switches or fuses to distribute incoming power to more than two electrical equipment. Occasionally, the junction box is used to distribute 1 power to more than 2 channels, but this usage can not provide protection for line equipment, so it is rare. The junction box has no electrical components, such as switch and leakage protector, which plays a transitional role, is easy to maintain and has a simple structure. Distribution boxes are generally complete sets, with complex structure and many original appliances, and generally have leakage protection systems.

After the above introduction about the advantages and disadvantages of wire box classification, I believe everyone has a more comprehensive understanding of the knowledge of wire box. In fact, there are many explosion-proof boxes, and it is more expensive to add one on the market, but this kind of box often uses a larger circuit and is often not used in daily life. Interested friends can learn about it. Regarding the classification of wire boxes, the rabbit stops here for you.

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