Surface-mounted masonry distribution box

A surface-mounted masonry distribution box is an electrical enclosure designed for wall installation, providing safe housing for circuit breakers, fuses, and wiring in residential, commercial, and industrial settings.

Key Features

Construction and Materials: These boxes are typically made from fire-resistant ABS, polycarbonate, or stainless steel, offering durability, corrosion resistance, and insulation. Stainless steel variants are suitable for outdoor or harsh environments, providing high strength and protection against oxidation and rust ( ). Protection Ratings: Surface-mounted distribution boxes often feature IP40 to IP65 ratings, ensuring protection against dust, water, and accidental contact. IP65-rated boxes are fully dust-tight and protected against water jets, making them suitable for outdoor installations ( ). Capacity and Modularity: They can accommodate 2 to 36 ways, with integrated earth and neutral bars and optional terminal strips. Modular designs allow multiple boxes to be installed side by side, and DIN rails are commonly included for mounting circuit breakers and other components ( ). Doors and Accessibility: Options include transparent or opaque doors, sometimes with safety locks and hinges on both sides, allowing easy inspection of fuses or status indicators without opening the enclosure ( ). Applications: These boxes are suitable for modern buildings, commercial facilities, laboratories, factories, and energy systems. They support AC circuits up to 500V and provide protection against overcurrent, overload, and short circuits ( ). Installation: Surface-mounted boxes are designed for easy wall mounting, often including removable mounting plates, cable grommets, and waterproof mounting tabs. They are lightweight compared to metal boxes, simplifying installation and relocation ( ). Standards Compliance: Many products comply with CEI 64-2, EN 60079, and CE standards, ensuring safety, reliability, and compatibility with modern electrical systems ( ).

Optional Accessories

• Double-row or screwless insulated terminal strips
• Cable glands and bushings for secure wiring
• Pre-assembled or machined enclosures for automation or KNX systems
• Transparent doors for quick visual inspection of components ( )

Summary

Surface-mounted masonry distribution boxes provide a flexible, safe, and modular solution for electrical distribution. They combine durable materials, high protection ratings, and easy installation to meet the needs of residential, commercial, and industrial applications, while offering options for customization and future expansion ( ).