NEMA 3X enclosures and junction boxes are designed for indoor or outdoor applications to protect electrical components. NEMA 3X standards offer internal equipment protection against solid objects, damage from corrosion and ice formation, and the harmful effects of rain or water ingress. Molded from durable polycarbonate plastic, NEMA 3X enclosures are available in a range of sizes and styles. Looking for a different NEMA rating? View all NEMA enclosures here.