Electrical Distribution Boxes & DB Enclosure Shells
Sheet metal enclosures for distribution boards and sub-distribution panels: consumer units, DIN-rail distribution boxes, meter enclosures and multi-way boards with doors, busbar provision, gland entry and knockouts prepared for your electrical build.
Distribution Enclosures Built for Repeat Assembly
Distribution boxes are volume products: they are bought in batches, assembled on a bench and installed on site by someone in a hurry. Consistent knockouts, a mounting plate that lines up every time and a door that closes squarely are what make that process work.
We manufacture the enclosure and its internal mechanical parts — plate, rail brackets, knockouts, gland entry and door hardware. Breakers, busbars, wiring and the electrical certification of the assembled board remain with you.
Closer Look at This Enclosure Type
Representative photographs of the construction, interfaces and installation context for this product family.
Specifications at a Glance
| Parameter | Typical Specification |
|---|---|
| Typical unit | Distribution box, consumer unit shell, sub-distribution board, meter enclosure, multi-way panel |
| Mounting | Surface, semi-flush, flush, wall or pole, with adjustable feet for floor units |
| Materials | SPCC 0.8-1.5 mm, galvanized SECC, stainless for damp or outdoor positions |
| Size envelope | Compact boxes from 150 × 200 × 80 mm; multi-way boards up to 1200 × 800 × 250 mm |
| Internal | Mounting plate, DIN rail brackets, busbar supports, divider panels, cable clamps |
| Entry & knockouts | Pre-punched knockouts, gland plates, brush strips, spare apertures by size |
| Door & access | Hinged or lift-off door, transparent window option, screw-fixed cover, cam lock |
| Finish | Powder coat RAL7035 / RAL9010 / custom, mounting plate zinc plated |
The parameters above are representative of typical projects in this category. Your drawing defines the final specification, and every quotation states the scope it covers.
Popular Configurations We Manufacture
Every size and option is customised to your drawing. Use a configuration below as a starting point for your enquiry.
Consumer Unit & DIN Rail Boxes
Compact boxes with DIN rail provision for domestic and small commercial distribution.
| Typical size | 150-450 W × 200-600 H × 80-150 D mm |
| Internal | DIN rail bracket, neutral and earth bar mounts |
| Door | Hinged or removable cover, window option |
Sub-Distribution & Multi-Way Boards
Larger boards for floor or wall mounting with room for multiple rail runs and cable zones.
| Typical size | 600-1200 W × 400-800 H × 150-250 D mm |
| Internal | Mounting plate, divider panels, cable clamps |
| Entry | Top and bottom gland plates, knockouts |
Meter & Service Enclosures
Enclosures for meters, isolators and service equipment, indoors or in protected outdoor positions.
| Typical size | 300-800 W × 400-900 H × 150-300 D mm |
| Options | Meter window, sealable door, tamper fixings |
| Material | Steel, galvanized or stainless |
Materials, Finishes & Customisation
Enclosure material
| Cold-rolled steel SPCC | 0.8-1.5 mm — the standard for indoor distribution boxes |
| Galvanized steel SECC | 0.8-1.2 mm — improved corrosion behaviour for damp locations |
| Stainless steel SUS304 | 0.8-1.5 mm — outdoor, coastal and washdown installations |
Assembly features
| Knockouts | Pre-punched to standard conduit and cable sizes, or to your drawing |
| DIN rail provision | Brackets or slots at your rail pitch with room for busbar and wiring |
| Cable management | Clamps, tie-off points, cable zones and divider panels |
Customisation
| Windows | Transparent panels for meters and indicator viewing, gasket sealed where required |
| Locks & seals | Cam locks, key locks, padlockable hasps, sealable screws and tamper fixings |
| Marking | Rating plates, circuit labels and silk-screen marking to your artwork |
How This Product Moves Through the Workshop
Because distribution boxes are produced in batches, the flat pattern is set up once and reproduced: knockouts, rail slots and fixing holes are punched or laser cut at fixed positions, and the panel set is formed on the same set-up every run. Coating is applied before internal parts are fitted, and each batch is sampled for door fit and knockout position.
- Drawing review with DFM feedback before production release
- Fiber laser cutting of the complete flat pattern in one set-up
- CNC press-brake forming, welding and grinding
- Coating applied before gaskets, hardware and glass are fitted
- First-article and sample inspection recorded for each batch
Common Questions About This Product
Yes. Knockouts are produced to standard conduit and cable diameters or to any size on your drawing. Tell us which sizes you want on which faces and we will build the punch layout accordingly, keeping it consistent for repeat orders.
No. We manufacture the sheet metal enclosure and its internal mechanical parts. Breakers, busbars, meters, wiring and the certification of the assembled distribution board are supplied by you.
Yes. Window panels are available in glass or polycarbonate with a formed frame and, where the protection level requires it, a gasket seal. We will confirm the window aperture against your meter or display dimensions.
We accept a single prototype for approval and then serial batches. For distribution boxes most customers start with a sample to check knobouts and door fit, then order in repeating batches.
Yes. Send the sample or photographs with key dimensions and we will reconstruct the geometry in CAD and return a drawing for confirmation before production. Where the original design has a weak point we will point it out and propose an alternative.
Guides for This Application
Electrical Distribution Box Fabrication: Panel Boxes and DBs
Entries, DIN rails, busbar supports and barriers
Read guideDistribution Board Layout: Busbars, DIN Rails and Barriers
Planning the board layout from the inside out
Read guideDistribution Box Protection Levels and Construction Guide
IP selection, door types and temperature rise
Read guideSend Us Your Drawing
Tell us the enclosure you need, the environment it works in and the quantity — we will return engineering feedback and a quotation, typically within 24 hours on working days.