Electrical Distribution Box
SKU: FL-IN-001
Wall-mount electrical distribution box, IP65 rated, powder-coated steel, multiple sizes.
| Material | Cold-rolled steel (SECC, 1.5mm) |
|---|---|
| Manufacturing Process | Laser cutting + bending + powder coating |
| Surface Finish | Powder coating (RAL 7035 standard) |
| Tolerance | ±0.3mm |
| Dimensions | 600×400×200mm (customizable) |
| Door | Single/double |
| IP rating | IP65 |
| Mounting | Wall |
| MOQ | 50 units |
| Lead Time | Quoted after drawing review and process confirmation |
| Sample Time | Quoted after drawing review and process confirmation |
| Sample Fee | USD 150 |
| Price Range | USD 75-180/unit |
| Applications | Factories, warehouses, commercial buildings, control rooms |
| Compliance | IEC 62208, UL 50 |
| Export Markets | USA, Germany, Japan, Korea |
How This Electrical Distribution Box Is Fabricated and Checked
This enclosure is made from SECC – steel that already carries a zinc coating – and that single fact changes what matters. The corrosion protection is on the substrate, so the cut edges and the coating over them are the details that decide whether the box still looks new in five years.
| Stage | What happens | What is verified before the job moves on |
|---|---|---|
| Blanking | Panels laser cut from SECC sheet, which arrives already zinc coated | Panel size and the cut edge condition. On a zinc-coated substrate the cut edge is the one place the protection is interrupted, so it is the place corrosion starts |
| Forming | Body and door formed, with the edge folds that take the fixing and the gasket | Fold positions and door flatness. Door flatness is what decides whether the gasket compresses evenly around the full perimeter |
| Cut-outs and apertures | Cable entries and the door apertures made | Cut-out positions and burr condition. On this substrate a burr is both a handling hazard and a place where the coating will not cover cleanly |
| Assembly and welding where used | The carcass is assembled, with welding only where the design needs it | Where welding is used the zinc coating is burnt away locally, so those areas are treated as bare steel rather than relying on the substrate |
| Gasket and door provision | Gasket fitted and hinges and lock mounted | Gasket compression and lock engagement, checked on the finished door |
| Surface preparation and coating | Degrease, prepare, then powder coat over the substrate | Film thickness and coverage, with particular attention to apertures and edges where a coating thins as it flows away from the edge |
| Sealing check | The enclosure checked against the rating the specification calls for | Gasket condition and aperture treatment, since the rating is held by the door and the entries rather than by the sheet |
| Packing | Door braced, unit wrapped, corner protected | The packed unit, because the door is the vulnerable part in transit |
Where Electrical Distribution Box Can Be Revised Without New Tooling
Size, door arrangement and the protection rating are the three inputs; the aperture and gasket details follow.
| What can be changed | What it affects | What it does not affect |
|---|---|---|
| External size and internal depth | Panel sizes, mounting provision and the packing | The substrate and the protection concept |
| Single or double door | Hinge arrangement, lock type and the swing clearance on site | The internal layout |
| Protection rating | Gasket specification, door stiffness and aperture treatment | The external size |
| Cable entry position and type | Gland plates and the cut-outs behind them | The frame |
| Mounting: wall, floor or post | Fixing centres and the load path into the structure | The enclosure itself |
| Colour and identification | Powder specification and any labelling | Nothing structural |
Electrical Distribution Box: Common Buyer Questions
Why is SECC used rather than plain cold-rolled steel?
Because the zinc coating on the substrate keeps working where the sheet is cut or damaged, which is exactly where a painted cold-rolled box starts to rust. The cut edges are still the weak point on a SECC box, but they behave very differently from a bare edge on painted steel, and that difference is what the substrate is bought for.
What happens at the cut edges when the box is coated?
The powder coating covers the edge, and the zinc underneath protects the small area at the very edge if the coating thins there. That combination is why an SECC box with a proper coating outperforms a cold-rolled box with the same coating, but it depends on the coating reaching the edge rather than pulling back from it, which is something we check.
How is the protection rating verified?
By the design of the door and the entries, and by a check against the method the specification calls for. The sheet and the coating are not what holds the rating: the gasket, the door stiffness and how every aperture is sealed are. Where a test record is required, say so at enquiry stage so the method is agreed before production.
On a coated enclosure the edge and the aperture details are what decide the life of the product. Send the protection rating and the cable entries through the RFQ form and the substrate and the gasket are chosen against them. Related: enclosure manufacturing, surface finishing and the enclosure inspection checklist.
Why SECC Rather Than Plain Cold-Rolled Steel
SECC is cold-rolled steel with an electro-galvanized zinc layer already on it. The difference that matters on a distribution box is what happens at a cut edge and at a scratch. Plain cold-rolled steel has no reserve: once the paint film is breached at an edge, corrosion starts there and works outward under the coating. The zinc layer on SECC is sacrificial, so a scratch or an exposed sheared edge is protected for as long as there is zinc adjacent to it. On a wall-mounted box that gets drilled on site, fitted with cable glands, and then touched by whoever services it, that reserve is worth having.
- The box is cut and then folded, so cut edges exist. Specifying SECC means those edges are not bare steel waiting for humidity.
- 1.5 mm is chosen because the box has to hold its shape with the door open and stay flat enough for the door seal to compress evenly. Thinner sheet flexes at the corners.
- Powder coating in RAL 7035 is convention rather than requirement – if the installation has a colour scheme, the coating is the easy part to change.
The Four Details That Decide Whether a Wall Box Seals
An ingress rating is a design target stated on the drawing and verified on the configuration that is actually supplied – the box, the specified glands, and the door closing against its seal. It is not a property of the sheet. Four details decide whether it holds: a continuous sealing path around the door opening, enough door stiffness for the gasket to compress evenly at the corners as well as the middle, a cable entry face that is flat enough for the gland to seat, and a hinge side that does not collect water running down the wall. Miss any one of them and the rating on the drawing describes a box that was never built.
Welded corners versus folded seams is the first of those decisions. A folded and seam-welded box has a continuous corner; a folded box that is only spot-welded does not, and the corner becomes the leak path. We build the box to the sealing method the rating requires and we confirm the gland specification with you, because the box can be built perfectly and still fail on a gland that was chosen for a thinner wall. Where a rating has to be formally demonstrated, that testing is carried out by the equipment manufacturer or a third-party laboratory; we supply the enclosure built to the stated design intent. Lead time is quoted after drawing review and process confirmation.
Payment Terms
How a project is paid for is agreed before production starts, and the structure that applies to your order is stated on the quotation and on the order confirmation, so there is no ambiguity later.
- 30% advance payment with the order and the 70% balance before shipment — our standard structure.
- 70% advance payment with the order and the 30% balance before shipment — used for some projects.
- 100% payment in advance before production starts — used for some projects.
If your finance team works to a fixed structure, say so in the first enquiry and we will confirm what applies to your order before you commit. Request a quotation.
Questions buyers ask before sending drawings
The questions that come up most often before a project starts, answered the way we answer them by email.
What do you need from me to quote Electrical Distribution Box?
2D drawings as PDF, DWG or DXF, or 3D files as STEP, IGES or SolidWorks, together with material grade, sheet thickness, surface finish, quantity and destination country. If the drawing is not finished yet, send a photo, a sketch or the existing part instead — we review what can be measured from it and reply with the questions that still need answering.
How long does a quotation take?
Enquiries are answered within one business day. Simple laser-cut and bent parts are quoted within 24 hours. Welded frames, assembled units and multi-part structures are quoted after the drawing review and process confirmation, and the date is confirmed in our reply.
Is there a minimum order quantity?
Prototypes are made from a single piece and small batches of 10–50 pieces are routine. Prototype, first batch and repeat volume are quoted together so the numbers stay consistent as the project scales.
Can you work from a sample or a photo if I have no drawing?
Yes. Send the part itself, clear photographs with a rule or caliper in frame, or a dimensioned sketch. We measure what can be measured, list what is still undefined, and confirm it with you before production.
Need a Similar Part?
Most enquiries that start on a page like this are not an order for Electrical Distribution Box — they are a search for a factory that can make something like it. Send us your drawing, 3D model or sample and we will review the manufacturing process and the quotation requirements, then come back with a process plan, a price and a lead time.
We work from 2D drawings, STEP / DWG / DXF / PDF files, or a physical sample if that is all you have.
No complete drawings yet? Describe the part, send photos or a sketch, or send a sample — we can start from there. Discuss your project.
Trade Terms and Delivery
We quote under the standard Incoterms your logistics team already works with, and build the packing and documentation around the one you choose.
- EXW — you collect from our Ningbo facility and run export clearance through your own forwarder.
- FOB Ningbo — we deliver to the vessel at Ningbo port and handle export clearance.
- CIF — we cover carriage and insurance to your named destination port.
- DDP — we handle carriage, insurance, import clearance and duties through to your door.
Send your destination country, target delivery date and preferred trade term together with the drawing. Request a quotation.
Quotation Time
We quote from your drawings. How long that takes depends on what the part asks for:
- Simple parts — quoted within 24 hours. Laser-cut blanks and bent components, supplied with complete 2D or 3D drawings. Mon–Fri, GMT+8.
- Complex assemblies — quoted after the drawing review. Payment kiosks, multi-part welded frames, enclosures with purchased hardware, or anything needing a coating or assembly trial. We confirm a quotation date once the scope is clear.
Production lead time is quoted separately, after drawing review and process confirmation. Send your drawings.
What stands behind this quotation
- Manufacturing since 20162,500 m² Ningbo plant — 3 laser cutting machines (including newer TRUMPF), 4 CNC press brakes and 10 welding stations.
- Shipped to more than 30 export marketsEnclosures, cabinets and formed parts supplied to OEM buyers across Europe, North America and Asia.
- 123 documented product casesMedical device housings, HVAC and heat pump enclosures, agricultural and livestock equipment, industrial hydraulics, material handling trolleys and EV charging cabinets.
- Factory evidence you can checkTUV Rheinland audit reference MIC-ASI243729 and Bureau Veritas reference MIC-ASR263630 available for buyer review under NDA.
Before you send drawings: an NDA is signed on request · first-article inspection is carried out before a batch continues · pricing is staged from prototype quantity to repeat volume · pre-shipment photos and packing records are prepared when the project needs them.