The main body of the enclosure is made of ABS engineering plastic, while the transparent cover adopts high‑toughness PC material. These materials feature high impact resistance, wide temperature tolerance, good chemical‑corrosion resistance and excellent electrical insulation. They maintain good surface gloss and resist discoloration and aging. Equipped with polyamide sealing gaskets for enhanced corrosion resistance, the enclosure achieves reliable IP65 protection rating. It keeps out dust and withstands high‑pressure water jets, delivering moisture‑proof and rain‑proof performance for long‑term service in open‑air and humid environments. BSUMWELL The transparent viewing cover allows direct visual inspection of internal circuit breaker status without opening the box. The cover opens and closes smoothly with tight sealing. Knock‑out cable holes are pre‑reserved on enclosure sides, compatible with PG13.5, PG21 and PG29 cable glands for flexible and convenient wiring.