NEMA 4 enclosure manufacturer
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.
Envie-nos um e-mail:vivian@hofengfab.com
Applications
Our NEMA 4 enclosures are trusted in a wide range of environments, including:
Factory automation & machine control
Instalações elétricas no exterior
Instalações de tratamento de água
Food & beverage processing
Sistemas de energia renovável
Telecommunications infrastructure
Serviço completo de conceção, moldagem e moldagem por injeção.
Serviços de Fabricação à Medida
Especializada no processamento de chapas metálicas de precisão, incluindo dobragem, corte a laser, soldadura com acabamento escovado, polimento, estampagem e muito mais.
Entrega pontual.
A prototipagem é normalmente concluída no prazo de 10 dias.
O prazo de produção normal é de cerca de 15 dias, dependendo da quantidade e da complexidade do produto.
Produtos relacionados
Atendemos setores como a automação industrial, sistemas de telecomunicações/montagem em rack, energias renováveis, equipamento médico e aplicações militares/aeroespaciais, fornecendo soluções de caixas robustas e específicas para cada aplicação, concebidas para garantir a fiabilidade.
Armários para racks de servidores
caixa de junção elétrica
caixas industriais
Perguntas frequentes
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 adds resistência à corrosão, making it more suitable for outdoor, marine, ou chemical processing environments.
| Característica | 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.
Alumínio – 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 uso no exterior and are commonly used in HVAC controls, solar installations, traffic systems, e 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 NEMA 250 standards 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.