A typical five-position distribution box generally measures around 250–300 mm in height, 200–250 mm in width, and 80–120 mm in depth, depending on manufacturer and mounting type.

Overview

A five-position distribution box is designed to house five modular circuit breakers or similar devices. These boxes are commonly used in residential, commercial, and light industrial electrical installations. The dimensions are standardized to accommodate DIN rail-mounted devices and allow sufficient space for wiring, ventilation, and safe operation .

Typical Dimensions

While exact measurements vary by manufacturer, standard five-way boxes generally fall within the following ranges:

• Height: 250–300 mm
• Width: 200–250 mm
• Depth: 80–120 mm These dimensions ensure that the box can comfortably fit five MCBs (Miniature Circuit Breakers) or equivalent modular devices, with adequate spacing for wiring and terminal connections .

Mounting and Installation Considerations

• Mounting: Most five-position boxes are designed for wall mounting with pre-drilled holes or adjustable studs for easy installation .
• Internal Layout: The internal DIN rail is typically 35 mm wide, allowing modular devices to snap in securely.
• Clearance: Manufacturers provide extra space above and below the DIN rail for cable entry and exit, ensuring compliance with electrical safety standards .
• Cover and Safety: Front covers are usually lockable or screw-mounted, with transparent or opaque options to protect the devices while allowing status visibility .

Variations

Some manufacturers offer compact or extended versions of five-position boxes:

• Compact: Slightly smaller footprint for tight spaces, may reduce wiring space.
• Extended: Extra depth or width to accommodate larger breakers, additional wiring, or auxiliary devices .

Summary

A five-position distribution box is typically around 250–300 mm high, 200–250 mm wide, and 80–120 mm deep, designed to house five modular devices safely and efficiently. When selecting a box, consider mounting type, internal DIN rail layout, and wiring clearance to ensure proper installation and compliance with electrical standards .