Dimensions of the Indoor Distribution Box

Indoor distribution boxes typically range from 200 × 200 × 120 mm up to 800 × 600 × 300 mm for wall-mounted units, with customizable options available for specific installation needs.

Standard Sizes

Indoor distribution boxes, often used in residences, offices, and factories, do not have a single universal size. Common wall-mounted sizes include 300 × 300 × 150 mm, 400 × 300 × 200 mm, and 600 × 400 × 200 mm. Larger freestanding cabinets can range from 1600–2200 mm in height, 600–1800 mm in width, and 300–600 mm in depth. These dimensions account for external measurements; usable internal space is slightly smaller due to wall thickness, mounting plates, and door returns .

Customization Options

Manufacturers provide full-dimensional customization for indoor distribution boxes. Width, height, and depth can be tailored to installation requirements. Internal layouts, such as single or double doors and mounting plate arrangements, can also be customized. Advanced CNC bending and punching allow precise positioning of openings, cable entries, and interface accessories . Materials typically include cold-rolled steel or 304 stainless steel, with thickness adjustable based on application and budget .

Considerations for Choosing Dimensions

When selecting or customizing a distribution box, consider:

• Number of circuits or devices to be installed
• Cable entry and bend radius for wiring
• Future expansion and spare capacity
• Thermal management and ventilation
• Protection rating (IP40 or higher for indoor use)
• Ease of maintenance and service access

Summary

While standard indoor distribution boxes provide a practical starting point, customization ensures optimal fit and functionality for specific electrical layouts. Typical wall-mounted boxes range from 200 × 200 × 120 mm to 800 × 600 × 300 mm, but manufacturers can adjust dimensions, materials, and internal configurations to meet precise requirements .