2、Common 8 Modular Switch Board Size Formats in India
Indian-style modular switch systems are available in more than one physical format.
For 8 modular switch board applications, two reference formats frequently encountered in product planning are:
- 3 × 9 inch horizontal format
- 5 × 5 inch square format
These dimensions provide a useful starting point when discussing wall box and switchboard configuration. However, they should be treated as nominal format references, not as a guarantee that products from different brands will share identical mounting dimensions.
2.1 3 × 9 Inch 8 Module Horizontal Format
The 3 × 9 inch format creates a wide horizontal switchboard layout.
Converted directly into metric units:
3 inches = 76.2 mm
9 inches = 228.6 mm
So the nominal reference size is approximately:
This format is suitable for wall locations where several functions need to be arranged across one horizontal control point.
Typical applications include:
- Living-room lighting control
- Hotel bedside control
- Office lighting control
- Multi-circuit switchboards
- Switch-and-socket combinations
- Smart-home control groups
The horizontal arrangement provides space for multiple functions while maintaining a single coordinated switchboard appearance.
2.2 5 × 5 Inch Square 8 Module Format
The 5 × 5 inch format provides a more compact square installation footprint.
The nominal reference size is therefore approximately:
A square configuration can be useful where the wall layout, furniture position, decorative design or existing installation opening is better suited to a compact shape than a long horizontal board.
This type of plate for switch board installation can also provide a compact format for a wall switch arrangement where space and layout requirements favor a square configuration.
The internal module arrangement may differ between product systems, so the square outer format alone is not sufficient to confirm module or faceplate compatibility.
2.3 Quick 8 Module Switch Board Size Reference
| 8 Module Format | Nominal Size | Metric Conversion | Layout |
|---|
| Horizontal | 3 × 9 in | 76.2 × 228.6 mm | Wide horizontal |
| Square | 5 × 5 in | 127 × 127 mm | Compact square |
The inch-to-millimeter conversion is exact mathematically, but the resulting numbers should not be treated as the finished external dimensions of every commercial product.
Actual modular box, wall boxes, frames and faceplates can be larger or smaller depending on the product series.
2.4 Nominal Size Is Not the Same as Actual Product Dimensions
Actual 8-module products demonstrate why module count and physical dimensions need to be separated.
For example, Legrand India lists an 8-module metal flush box with dimensions of 231.2 mm × 75.7 mm × 51 mm.
An 8-module Myrius NextGen cover plate with support frame is listed at 245.2 mm × 86 mm × 6.5 mm.
Another Legrand 8-module plate from the Arteor range is listed at 252.5 mm × 92 mm × 12.2 mm.
All of these products are described as 8-module products, yet their actual dimensions are different.
For procurement, “8 Module” should therefore be followed by an actual dimensional drawing rather than used as the complete size specification.
