Aluminum Junction Box — Die Cast OEM Manufacturing
Aluminum die-cast junction boxes for home appliance and industrial applications. We supply OEM clients who need precise dimensional fit, consistent surface finish, and reliable enclosure integrity at production volume. Surface powder coating as standard finish.
- Aluminum alloy die casting — lightweight, corrosion resistant, good thermal performance
- Surface powder coating as standard — clean finish ready for direct assembly
- Precise dimensional fit for enclosure and mounting interfaces
- In-house mold design and tooling — no third-party dependency
- CMM and X-ray inspection available
- Long-term OEM supply to major home appliance brands
Service & Delivery
Origin: Jiangyin, Jiangsu, China
OEM/ODM: Custom enclosure designs from drawings, CAD files, or samples
Tooling: In-house — mold ownership with the client upon completion
Lead Time: Mold 4–6 weeks / First samples within 2 weeks of mold / Production 15–25 days
MOQ: No fixed minimum — trial orders and volume programs both supported
Surface Treatment: Powder coating standard; other treatments available on request
Delivery: FOB, CIF, DDP — shipping globally from Jiangyin
Quality: IATF 16949, ISO 9001, ISO 14001 certified
Specifications
| Parameter | Specification |
|---|---|
| Product Name | Aluminum Junction Box / Aluminum Enclosure |
| Manufacturing Process | Aluminum alloy die casting |
| Surface Treatment | Powder coating (standard) |
| Tooling Capability | In-house mold design using UG 3D modeling and JSCAST simulation |
| Die Casting Equipment | 20 aluminum alloy die casting machines, 160T–1,250T |
| Quality Inspection | CMM dimensional verification, X-ray imaging, image measuring instrument |
| Quality Certifications | IATF 16949, ISO 9001, ISO 14001, ISO 45001 |
| Customization | OEM/ODM — drawings, 3D CAD files, or reference samples accepted |
| Tooling Ownership | Mold owned by customer upon completion |
| Mold Lead Time | 4–6 weeks |
| First Sample Lead Time | Within 2 weeks after mold completion |
| Production Lead Time | 15–25 days |
| MOQ | Flexible — trial orders to annual volume programs |
| Origin | Jiangyin, Jiangsu, China |
| Delivery Terms | FOB, CIF, DDP available |
Aluminum Junction Box by Application
- Washing Machine Control Assembly
- Dryer Electrical Housing
- Home Appliance Terminal Box
- Industrial Control Enclosure
- Motor Junction Box
- Custom OEM Enclosure
MORE ABOUT MEITUO
Meituo is a metal parts manufacturer based in Jiangyin, China, founded in 1999. Our 33,000 m² facility integrates mold design, die casting, machining, stamping, surface treatment, and assembly. We hold IATF 16949 and ISO 9001 certifications and supply OEM parts to home appliance, automotive, and industrial customers in over 30 countries.
FAQ
What kind of junction boxes does Meituo manufacture?
Can you produce junction boxes to our drawings or samples?
How long does it take to get first samples?
What surface treatment do aluminum junction boxes get?
Aluminum Die Cast Junction Box: Function, Materials, and OEM Manufacturing
What Is an Aluminum Junction Box?
A junction box — also referred to as a terminal box or electrical enclosure — is a protective housing for electrical connections. In home appliance applications, it encloses the wiring terminals, connector blocks, or control interfaces inside the appliance body, protecting them from moisture, vibration, and mechanical contact.
The aluminum die-cast junction boxes we produce are OEM components designed to be assembled directly into finished appliances. They are not standalone electrical products. Their function is straightforward: protect the electrical connection point, fit precisely within the appliance assembly space, and hold up reliably over the product's service life.
Why Aluminum Die Casting for Junction Boxes
Aluminum is the preferred material for junction boxes in home appliance applications for several practical reasons. It is lightweight, which matters in products where total weight affects shipping cost and user handling. It dissipates heat better than plastic, which is relevant when the enclosure sits near a motor or heating element. And aluminum die casting produces consistent wall thickness and tight dimensional tolerances, which is important when the box has to fit within a precise assembly envelope.
Compared to sheet metal fabricated enclosures, die-cast aluminum junction boxes can achieve more complex geometries in a single production step, with integrated bosses, mounting lugs, and port features formed in the mold rather than added as separate operations. This reduces assembly complexity and part count for the OEM client.
Typical Applications in Home Appliances
| Application | Function of Junction Box |
|---|---|
| Washing machine motor assembly | Encloses motor wiring terminals, protects from moisture and vibration |
| Dryer electrical housing | Protects control wiring connections near heating elements |
| Air conditioner fan motor | Terminal protection in outdoor or semi-exposed environments |
| Pump motor enclosure | Waterproof electrical connection protection |
| General home appliance control assembly | Encloses connector blocks and wiring interfaces inside appliance body |
Manufacturing Process
Mold Design
Junction box molds typically involve thin walls, integrated features such as mounting bosses and lid seating faces, and multiple port openings. Our mold engineers design tooling in-house using UG 3D modeling and JSCAST casting simulation, validating wall thickness distribution and fill behavior before cutting steel. This reduces the risk of porosity or sink marks on visible or functional surfaces.
Die Casting and Post-Processing
Parts are produced on our aluminum alloy die casting machines ranging from 160T to 1,250T. After ejection, shot blasting cleans the casting surface. Powder coating is then applied as the standard finish, providing corrosion resistance and a uniform appearance. Where required, CNC machining is used to bring mating faces or threaded features to final tolerance.
Inspection
Dimensional verification is carried out using CMM equipment and image measuring instruments before shipment. X-ray inspection is available for internal defect detection. Our process operates under IATF 16949, ensuring that quality controls are applied consistently across production batches.
What to Specify When Ordering a Custom Aluminum Junction Box
When requesting a quote or starting a development project for a custom aluminum junction box, the information that helps us move fastest is: overall envelope dimensions, wall thickness requirements, port locations and sizes, lid or cover attachment method, mounting interface geometry, and surface treatment requirements. If you have an existing part you need matched or improved, a physical sample or 3D scan works just as well as a drawing.