Small distribution boxes are compact electrical enclosures designed to safely distribute power and signals in residential, commercial, or industrial settings.

Overview

Small distribution boxes, also known as sub-distribution or fuse boxes, are used to organize and protect electrical circuits. They are available in surface-mounted or flush-mounted designs and come in various sizes, typically accommodating 1 to 42 modules depending on the model and application . These boxes are essential for structuring electrical installations by floor, room, or specific equipment.

Key Features

• Material and Safety: Many small distribution boxes are made from halogen-free polycarbonate, ABS, or styrene, providing heat and shock resistance. Some models are IP30 to IP40 rated, offering protection against dust and limited moisture .
• Modular Design: Modular systems allow flexible installation of circuit breakers, terminals, and other components. Some boxes include TS35 mounting rails for easy attachment of modules .
• Accessibility: Certain series, like the DISBOX-DA, feature an open design for direct access to internal components, while others have lockable transparent doors for security and visibility .
• Environmental Suitability: Surface-mounted boxes can be used in wet rooms, basements, garages, and indoor areas, with temperature resistance ranging from -25°C to +60°C .
• Customization: Many manufacturers offer customizable housings, terminal options, and labeling systems to match project-specific requirements .

Applications

• Residential: Distributing power to different rooms or floors, protecting circuits with fuses or breakers.
• Commercial and Industrial: Decentralized energy, signal, and data distribution, including smart building automation and I&C applications .
• Special Environments: Moisture-prone areas, workshops, or areas requiring halogen-free materials for fire safety .

Popular Options

• Type 10 and 11 Series: Modular small distribution boxes with various input/output options, available with or without protective breakers .
• DISBOX-DA Series: Surface-mounted, open design, 1–42 modules, halogen-free, with integrated mounting rails and PE/N terminals .
• Lion Electric 12-Module Box: Surface-mounted, IP40, lockable transparent door, suitable for damp rooms and indoor areas .
• Eaton xComfort Compact Distribution Boxes: Flush-mounted, 1–5 row options, expandable terminals, and integrated cable management for residential and commercial use .

Conclusion

Small distribution boxes provide a safe, flexible, and modular solution for electrical distribution in various environments. When selecting a box, consider module capacity, mounting type, IP rating, material, and environmental suitability to ensure compliance with safety standards and project requirements.