Dimensions of a 25A Distribution Box

A typical 25A distribution box has approximate dimensions ranging from 65 x 65 mm up to 361 x 254 mm, depending on the model and manufacturer.

General Dimensions

For low-voltage distribution boxes, such as those used in residential, industrial, or automotive applications, the enclosure sizes generally range from 65 x 65 mm to 361 x 254 mm, with varying depths depending on the number of circuits and internal components . These boxes are designed to accommodate a 25A rating and provide sufficient space for busbars, fuses, and wiring. Cover heights may vary, and some models offer smooth surfaces or metric-threaded knockouts for cable entry .

National Luna DC25 Distribution Box

The DC25 Distribution Box is specifically designed for 12V systems in trailers, caravans, and campers. It supports a 25A DC-DC charge system, multiple fused DC outputs, USB charging ports, and can handle lead-acid or lithium batteries . While the exact physical dimensions are not listed in the publicly available manual, the box is compact enough for fixed installations in vehicles and small enclosures, typically fitting within a medium-sized automotive or marine electrical compartment .

Installation Considerations

• Mounting: The box can be mounted in a fixed location, often on a wall or inside a cabinet.
• Cable Entry: Removable gland plates or knockouts allow for flexible wiring.
• Protection: Enclosures are designed to protect internal components from dust, moisture, and mechanical impact, often rated for IP protection depending on the model.

For precise installation planning, it is recommended to consult the manufacturer's datasheet or contact National Luna directly to obtain the exact height, width, and depth of the DC25 distribution box . This ensures compatibility with your specific application and available space.