The general domestic junction box is type 86. The so-called 86 type wire box means that the outer diameter of the switch socket panel is 86x86mm, the junction box is 86x86mm, the cassette is 75x75mm, and the junction box cover (or directly with the switch and socket panel) ), generally PVC and white iron box materials.
Waterproof junction box should be considered when designing
1. Material selection: The main application areas of the current waterproof junction box products are the relatively harsh environment and the on-site and open-air scenes. The impact resistance, static load strength, insulation properties, non-toxicity, anti-aging properties, corrosion resistance and flame retardancy of the material should be considered in consideration of product safety performance. (Non-toxic performance has been widely concerned, mainly because if the waterproof junction box product does not release toxic and harmful gases when it is exposed to fire, it is usually caused by the inhalation of a large amount of toxic gases in the event of fire. most).
2, structural design: should consider the overall strength of the waterproof junction box, beautiful, easy to process, easy to install and recyclable. At present, the waterproof terminal box products produced by international mainstream manufacturers do not contain any metal fittings, which simplifies the product recycling process. However, most domestic manufacturers choose different materials, and the material has poor resistance to tamping. Generally, brass inserts are installed in the mounting sockets of the waterproof junction box to increase the installation strength, so that the material recovery process will Increase time and expenses. If you use raw materials from high-performance indicators provided by regular manufacturers, you can solve such problems.
3, wall thickness: generally consider the overall cost of the product when designing the product should be as far as possible to meet the product impact resistance and anti-deformation performance, try to reduce the product wall thickness, the international waterproof junction box in the design, ABS and PC The wall thickness of the material product is generally between 2.5 and 3.5, the glass fiber reinforced polyester is generally between 5 and 6.5, and the wall thickness of the die-cast aluminum material is generally between 2.5 and 6. The material wall thickness should be designed to meet the installation requirements of most components and accessories.
4, the choice of sealing apron material: For waterproof junction box products, commonly used sealing apron materials are: PUR, EPDM, Neoprene, Silicon. Temperature range, tensile strength, expansion ratio, hardness, density, compression ratio, and chemical resistance should be considered when selecting a sealing apron.
