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NEMA 3R enclosure manufacturer
Our NEMA 3R Enclosures are engineered to provide reliable protection for electrical components in both indoor and outdoor environments. Built to withstand rain, sleet, and ice formation on the enclosure exterior. Hofengfab manufactures NEMA 3R enclosures for housing power distribution, lighting contractors, switch gear, and other electrical components that need to be protected in an outdoor environment.
Compliance & Certifications: UL Listed, CSA Certified, and compliant with NEC, IEC, and OSHA standards.
aluminum electrical enclosure manufacturer
Hofengfab specializes in low-volume, high-mix, made-to-order solutions, offering over 1,600 customizable options tailored to your exact specifications—including height, width, depth, material, rating, and certifications. We ensure fast turnaround times, with samples ready in 7–10 working days and mass production completed within 15–25 working days. Whether you need a small batch or a large order, we deliver on time.
wholesale NEMA 3R electrical enclosures
Your Trusted Supplier for Industrial NEMA 3R Enclosures in Bulk
At Hofengfab, we specialize in wholesale NEMA 3R electrical enclosures built to meet strict industry standards for outdoor and indoor environments. With over 15 years of experience in custom enclosure manufacturing and international exports, we deliver quality, compliance, and competitive pricing for OEMs, distributors, and engineering firms across North America, Europe, and the Middle East.
Custom NEMA 3R Enclosure
| Feature | Description |
| Material | Steel, Stainless Steel 304/316, Aluminum |
| Mounting | Wall, Pole, Floor, or Rack Mount |
| Finish | Powder Coating (RAL colors), Brushed, or Polished |
| Accessories | DIN Rails, Back Panels, Cable Glands, Fans, Filters |
| Door Styles | Single or double doors, hinged or lift-off, with gasketing |
| Accessories | Louvered vents, rain hoods, backplates, gland plates, handles |
| Size Range | From compact junction boxes to large control cabinets |
One-stop service for design, molding, and injection molding.
Custom Fabrication Services
Specializing in precision sheet metal processing, including bending, laser cutting, brushed welding, polishing, stamping, and more.
ON-Time Delivery.
Prototyping typically completed within 10 days.
Standard production lead time is around 15 days, depending on product quantity and complexity.
Related Products
We serve industries including industrial automation, telecom/rackmount systems, renewable energy, medical equipment, and military/aerospace applications - delivering robust, application-specific housing solutions engineered for reliability.
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FAQ
Are your NEMA 3R enclosures UL-certified?
Yes, UL certification is available upon request, especially for control panel assemblies under UL 508A.
Can you customize the size and mounting design?
Absolutely. We offer full customization including dimensions, cutouts, ventilation, and mounting options.
Are your NEMA 3R enclosures UL-certified?
Yes, UL certification is available upon request, especially for control panel assemblies under UL 508A.
Can NEMA 3R enclosures be used in coastal areas with high salinity?
Yes! Our steel enclosures feature triple-layer corrosion protection, and polycarbonate models are inherently rustproof.
Are mounting brackets included?
Standard enclosures include universal brackets. Custom mounting kits are available for specialized installations.
What’s the lead time for custom sizes?
Most orders ship within 2-3 weeks. Contact our team for expedited options.
How do I request a custom NEMA 3R enclosure?
Simply send us your specifications (drawings, dimensions, cutouts, environment details), and we’ll prepare a quote and design proposal.
Can I include my company branding or color?
Yes. We offer custom powder coating and screen printing or laser etching for logos and labeling.