The Average Thickness Of The Thinnest Part Of The Waterproof Junction Box Depends On The Box's Protection Rating.

The thickness requirement for waterproof cable box is between 1.5mm and 3mm, while the wall thickness standard for plastic weatherproof electrical box, a common plastic material, is relatively flexible. Material selection directly affects the thickness parameters—ABS and PC materials have different mechanical strengths, naturally resulting in different required wall thicknesses. Meanwhile, the sealing gasket of the door cover needs to be integrally molded and elastic, which requires the edge of the waterproof junction box to have sufficient thickness to accommodate the sealing structure.

The higher the protection rating of waterproof distribution box, the more stringent the requirements for the sealing performance of the enclosure. Achieving IP67 requires complete dustproofing, while some waterproof electrical box ratings can operate underwater up to 1 meter for short periods. These high-standard products still need to maintain considerable thickness in the thin-walled areas of the casing to withstand water pressure and prevent deformation that could lead to seal failure. In contrast, IP54 rating products have relatively relaxed requirements for wall thickness.