Wall-mounted enclosures
- Dimensions: 300–800 mm W × 150–350 mm D × 200–1000 mm H, custom sizes available
- Mounting points: four-point M8 reinforced rear fixing (or hook-mount), no deformation at ≤120 kg fully loaded
- Rear sealing: counterbored mounting holes with sealing washers keep wall dust and moisture out of the enclosure
- Material: SPCC cold-rolled steel as standard / 304 stainless steel / 5052 aluminum optional
- Protection: IP54 standard / IP65 optional, continuous foamed gasket around the full door frame
Specifications
The table below covers 80% of factory distribution room cases. Anything outside it we can still build — those are engineered items, quoted separately, with an indicative price the same day.
| Standard sizes (W×D×H) | 300×200×250 / 400×300×400 / 500×300×600 / 600×300×800 / 800×350×1000 mm, custom sizes available |
|---|---|
| Sheet thickness | SPCC door 1.5 mm / body 1.5 mm; stainless steel 1.2–1.5 mm; aluminum 2.0 mm |
| Mounting method | Four-point M8 counterbored reinforced rear fixing (standard) / rear hook-mount (optional) |
| Surface treatment | SPCC nine-stage pretreatment + electrostatic powder coat RAL7035; stainless steel brushed / bead-blasted |
| IP rating | IP54 standard / IP65 optional (GB 4208 / IEC 60529) |
| Door and lock | Single door or split upper/lower doors, three-point lock (two-point on small boxes), foamed gasket |
| Mounting rail | 35 mm DIN rail, 25 mm pitch module holes |
| Cable entry | Bottom / top knockouts to drawing, gland plate optional |
| Rated hanging load | Four-point fixed mounting, fully loaded ≤120 kg (hook type ≤60 kg), enclosure does not deform |
|---|---|
| Reinforced hanging points | Backing plate added inside the back panel hanging points; threads do not bite directly into the 1.5 mm sheet |
| Rear sealing | Counterbored hanging holes + sealing washers; wall dust and moisture do not enter the enclosure through the holes |
| Internal layout | DIN rail + wire duct pre-installed to drawing; partitioned chamber dividers optional |
| Grounding | Main grounding point M6 galvanized, with braided jumper to the door |
| Transparent door | PC transparent door optional; read indicator lights without opening the door |
| Floor distribution box enclosure | Wall-mounted box for building / floor with MCBs + terminals; holes punched to system drawing |
|---|---|
| Machine-side control box enclosure | Pushbutton + contactor control for a single machine; wall-mounted nearby |
| Lighting control box | Time / photocell control module mounted inside, with contactor and terminal layout provisions |
| Stainless steel, food-grade | 304 brushed enclosure with rounded corners; for washdown areas |
| Double-door construction | Outer door carries pushbuttons and meters; inner door shields live parts — operation and protection separated |
| Custom build | Custom cutouts, multi-box ganging, on-site measurement and drawing |
| Structural standard | GB/T 7251.1 / IEC 61439-1 (mechanical structure section) |
|---|---|
| Hanging load test | 1.5× rated hanging load, static, 10 min: enclosure deformation ≤1 mm, no thread stripping at hanging points |
| Seal check | Door frame gasket compression mark continuous around the full perimeter; 100% visual inspection |
| Factory inspection (per unit) | Diagonal dimensions, door gap, lock operation and DIN rail hole positions sampled |
| Documents with shipment | Outline drawing, cutout drawing, material certificate |
Five steps to specify your run
A configuration summary is generated as you go. It travels with your inquiry, saving a round of confirmation.
Build details
Systems have been in service for decades, and the failure points are always the same few: poor busbar contact, water ingress at the door seal, high temperature rise in the correction cabinet, and mis-phased outgoing feeders. The six hard rules below are written for exactly these points — every cabinet can be traced to them.
Mounting points won't bite into thin sheet
Backing plates welded inside the back plate mounting points, then tapped after welding, so M8 bolts bite into the backing plate — tapping directly into 1.5 mm enclosure sheet to hang 100 kg is a risky practice, and we don't do it.
Wall moisture stays out of the enclosure
Mounting holes are counterbored with sealing washers, so the holes are fully sealed once the bolts are tightened; with plain through-holes, damp walls let moisture travel through the hole into the enclosure.
It has to hold, and keep holding
Sampled units from each production run are statically loaded at 1.5x rated load for 10 minutes; deformation and mounting point thread condition are recorded unit by unit, and nothing ships until it passes.
One break ruins the whole loop
The foamed door frame gasket runs continuously around the full perimeter with no breaks, and the corners are joined and bonded at 45°; after the three-point (two-point) lock is compressed, the visible compression marks are continuous.
Install components right out of the box
35 mm DIN rail and wiring duct are pre-installed to drawing with module holes aligned, so the customer can mount components immediately on opening the box and skip a round of on-site hole modification.
No dead corners in a stainless steel enclosure
The 304 enclosure has rounded internal and external corners with brushed finish following the grain, so washdown in food plants leaves no crevices where residue can build up.
Photos & enclosure construction
Below are photos taken in our own shop — from the complete unit down to the internal busbars and secondary wiring. Every build detail can be checked item by item.
Image key: 01–05 are shop photos (the numbers match the shot list). The line drawing shows the front elevation of the enclosure; dimensions match the specification table above.
Wall-mount enclosure: more photos
Factory photos of units from the same series. Multiple photos per product are allowed, shown exactly as shot on the shop floor.
This section shows factory photos. The image slot number is the shot list sequence number.
Where these cabinets go
These are the routine applications — we can talk scheme and configuration directly. For the industry view, see the industry pages.
Floor distribution
A wall-mounted enclosure for building or floor-level distribution with miniature circuit breakers and terminals; installs on the mounting points left by the builder.
Machine-side control
Start-stop and protection control for a single machine, wall-mounted nearby to save floor space.
Lighting control
Timer or photocell control of lighting branch circuits for corridors and plant lighting zones.
Pump room / water treatment
For damp locations: 304 stainless steel + IP65, resistant to condensation and moisture.
Production line substation
Branch terminal boxes and signal repeater boxes, installed separately from the main cabinet for local operation.
Retrofit and add-on
Retrofit a control box onto existing equipment — we measure on site and produce drawings, no civil work required.
Commercial terms
Specification dated September 2026; quotations follow this.
| Drawings & design | Free |
| MOQ | 1 unit (5 or more recommended for production) |
| Production lead time | 15-25 days after drawing approval |
| on-time delivery | 98% |
| Warranty | 12 months |
| Loading port | Ningbo / Shanghai, China |
| Sheet steel | Baosteel / Ansteel cold-rolled sheet (SPCC) / 304 stainless steel |
| Factory visit & dispatch confirmation | Factory visits welcome; finished-cabinet photos and video before dispatch |
| Capacity | 5,800+ units / year |
Documents for your engineering team
Selection manual, outline dimensions and RFQ checklist — for the customer's electrical engineer. All three documents are being organized by product line; download links go live once complete.
Six questions procurement and electrical engineers ask most
How much weight can a wall-mounted enclosure carry?
Four-point M8 reinforced mounting: ≤120 kg at full load; hook-mounted: ≤60 kg. Above that, go with a floor-standing cabinet — not because the wall can't hold it, but because the fatigue risk at the mounting points under long-term vibration isn't worth taking.
What are the wall requirements?
Concrete or solid brick walls: four-point expansion bolts directly. Hollow brick and lightweight partition walls: through-wall threaded rods with a backing plate, or a floor support. The mounting plan is documented in the delivery package.
What material for a damp workshop?
For general damp conditions, SPCC with IP65. For washdown, food-grade, or coastal salt-fog environments, go straight to 304 stainless steel — don't count on a coating to survive washdown.
Are transparent doors reliable?
A PC (polycarbonate) transparent door has impact resistance dozens of times that of ordinary glass, and you can check indicator lights without opening the door. The downside is it scratches over time; for high-frequency access, we recommend a metal door with a viewing window.
Can it match the dimensions of the box already installed?
Yes. The biggest risk when replacing an old box is that the mounting holes won't line up with the wall. Send us the old box's outer dimensions and mounting hole spacing, and we'll build to the original dimensions and hole positions for a direct drop-in replacement.
Minimum order and lead time?
MOQ 1 unit. Standard sizes ship within 15 days; custom builds 15–25 days. For volume orders (≥20 units), priority scheduling is negotiable.
Other cabinet types in the same main circuit
Related products use color-block placeholders for now (product photos not yet complete; they will be replaced together). Internal links will be filled in once live URLs are confirmed.
Send dimensions or a photo of the old box — drop-in replacement, no wall modification
Send us the outer dimensions, mounting hole spacing, or a photo of your old box, and we'll provide an enclosure plan and quote free of charge · reply within 24 hours · build-to-drawing customization supported. Direct from the source factory, MOQ 1 unit, 15–25 day delivery, 1-year warranty.
ISO 9001:2015 · CE(LVD+EMC) · CQC · IP65
When you write, include: single-line diagram or primary scheme, switch room layout, load list, and component brand requirements. You do not need complete drawings — capacity and cabinet type are enough to start.