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Fabricant de boîtiers NEMA 4
Hofengfab is a leading manufacturer of electronics enclosures and industrial enclosures for a variety of applications. We offers a wide range of NEMA 4 electrical enclosures in various sizes—from small to large—to meet diverse application needs. Our enclosures are available in multiple materials, including plastic, aluminum, steel, and stainless steel. We provide a variety of types such as wall-mounted, free-standing, and JIC models. NEMA 4 boxes styles include hinged enclosures, junction boxes, pole-mount options, and more, making it easy to find the perfect NEMA 4 solution for your environment.
NEMA 4 electrical enclosures
Our NEMA 4 enclosures meet the diverse needs of OEMs, control panel builders, and electrical contractors worldwide.We provide a wide range of enclosures : Plastic enclosure, Handheld enclosure, Aluminium enclosure, Diecast aluminium box, Stainless steel box, IP67 waterproof enclosure, Junction box, 19"rack mount enclosure, etc…
custom NEMA 4 enclosure
At Shenzhen Hofengfab, we specialize in manufacturing custom NEMA 4 enclosures that offer reliable protection against water, dust, and harsh environmental conditions. Whether you need a small wall-mounted control box or a large free-standing stainless steel cabinet, our team can design and fabricate enclosures tailored to your specific requirements — including custom dimensions, cutouts, mounting brackets, and labeling.
With over 15 years of fabrication experience and a fully equipped ISO 9001-certified facility in Shenzhen, we serve OEMs and industrial clients across North America, Europe, and the Middle East. We guarantee fast prototyping, flexible order quantities, and competitive pricing.
E-Mail Us：vivian@hofengfab.com
Applications
Our NEMA 4 enclosures are trusted in a wide range of environments, including:
Factory automation & machine control
Outdoor electrical installations
Water treatment facilities
Food & beverage processing
Renewable energy systems
Telecommunications infrastructure
Service unique pour la conception, le moulage et le moulage par injection.
Services de fabrication sur mesure
Spécialisée dans le traitement de précision de la tôle, y compris le pliage, la découpe au laser, le soudage par brossage, le polissage, l'estampage, etc.
Livraison à temps.
Le prototypage est généralement réalisé dans les 10 jours.
Le délai de production standard est d'environ 15 jours, en fonction de la quantité et de la complexité du produit.
Produits apparentés
Nous desservons des secteurs tels que l'automatisation industrielle, les télécommunications/systèmes de montage sur rail, les énergies renouvelables, les équipements médicaux et les applications militaires/aérospatiales, en proposant des solutions de boîtiers robustes et spécifiques à chaque application, conçues pour être fiables.
Armoires à serveurs
boîte de jonction électrique
armoires industrielles
FAQ
What is a NEMA 4 enclosure?
A NEMA 4 enclosure is a type of protective enclosure rated by the National Electrical Manufacturers Association (NEMA) to provide protection against windblown dust, rain, splashing water, and hose-directed water. It is commonly used for industrial control panels, electrical junction boxes, and outdoor equipment where environmental resistance is critical.
What’s the difference between NEMA 4 and NEMA 4X enclosures?
Both NEMA 4 and NEMA 4X enclosures offer the same level of protection against water and dust. However, NEMA 4X ajoute corrosion resistance, making it more suitable for outdoor, marine, or chemical processing environments.
| Fonctionnalité | NEMA 4 | NEMA 4X |
| Waterproof | ✅ | ✅ |
| Dustproof | ✅ | ✅ |
| Corrosion resistant | ❌ | ✅ (e.g., stainless steel) |
| Outdoor-rated | ✅ | ✅ |
What materials are commonly used for NEMA 4 enclosures?
Shenzhen Hofengfab manufactures NEMA 4 enclosures using:
Plastic (ABS / Polycarbonate) – Lightweight, non-conductive, good for indoor use.
Carbon Steel (Powder-Coated) – Cost-effective for general industrial applications.
304 / 316 Stainless Steel – Offers excellent corrosion resistance for outdoor or food-grade use.
Aluminium – Lightweight and corrosion-resistant, ideal for marine or telecom applications.
Are NEMA 4 enclosures waterproof?
Yes. NEMA 4 enclosures are rated for protection against hose-directed water, splashing, and limited ingress during heavy rain or washdowns. While not submersible (like NEMA 6P), they are IP66-equivalent, making them suitable for most wet industrial or outdoor conditions.
Can NEMA 4 enclosures be used outdoors?
Absolutely. NEMA 4 enclosures are designed for outdoor use and are commonly used in HVAC controls, solar installations, traffic systemset outdoor electrical boxes. For areas with high salt or chemical exposure, we recommend NEMA 4X stainless steel enclosures.
Do NEMA 4 enclosures meet IP standards?
Yes. NEMA 4 enclosures are approximately equivalent to IP66, which means:
6 = Dust-tight (no ingress of dust)
6 = Protected against powerful water jets from any direction
Can I customize a NEMA 4 enclosure?
Yes. At Shenzhen Hofengfab, we specialize in custom NEMA 4 enclosures, offering:
Custom dimensions and depths
Pre-drilled mounting holes or cutouts
HMI windows, vents, latches, and cable glands
Internal accessories: DIN rails, backplates, terminal blocks
Upload your CAD drawing or request our engineering support to begin a custom design.
Are your NEMA 4 enclosures certified?
Yes. Our enclosures are manufactured in accordance with Normes NEMA 250 and can be produced to meet:
UL 508A (for industrial control panels)
CE compliance
RoHS directive
IP66 rating (tested to IEC 60529)
Certification documentation is available upon request.