Struggling to find the right enclosure manufacturer for your next project? You’re not alone. With so many suppliers out there, it’s tough to know who truly delivers on quality, reliability, and service. Choosing the right partner can make all the difference—saving you time, money, and headaches down the road. Top factories offer customized solutions, faster lead times, and products that stand up to real-world demands. Ready to discover which U.S. manufacturers stand above the rest?

Dive in to see our top picks!

Electrical Enclosures | nVent HOFFMAN

Electrical & Electronic Enclosures, Cabinets & Racks, Outlet Strips and …

Product Details:
Hammond Manufacturing offers electrical and electronic enclosures, cabinets, racks, outlet strips, and electronic transformers. Their product range supports the housing, protection, and power distribution for electrical and electronic systems.

Technical Parameters:
– Enclosure sizes specified as AxB(xC) in inches or millimetres (e.g., 16×12,
– Racks and cabinets specified by rack units (e.g., 36U, 44U)
– Cross-reference capability for competitor part numbers
– Partial and full part number search functionality

Application Scenarios:
– Industrial and commercial environments requiring electrical/electronic
– Audio or power distribution systems needing secure, managed installation
– IT and data centers for rack-mounting networking or server hardware
– Scenarios where reliable power transformation is necessary

Pros:
– Wide variety of enclosure types and sizes for diverse needs
– Cross-reference system aids replacement or compatibility with competitor
– Emphasis on quality products and service excellence
– Multi-language support (English/French)

Cons:
– Technical details like materials, certifications, and specific performance
– Some product information requires searching via part numbers rather than

Top 16 NEMA Enclosures Manufacturers in the USA – E-Abel

NEMA Enclosures – Industrial Electrical Enclosures Manufacturer | Nema …

Product Details:
NEMA Enclosures manufactures industrial electrical enclosures made from powder coated carbon steel, 5052 aluminum, and 304 or 316L stainless steel. Offerings include standard and custom enclosures with various global protection ratings. Products cover a range of enclosure types (wall mount, disconnect, junction box, free standing, floor mount, trough) and are certified to NEMA, IP, UL, C-UL, ATEX, and IECEx standards. Customization services, such as anodizing and silk screening, are available.

Technical Parameters:
– Enclosure ratings: NEMA 3R, 4, 4X, 12, 3RX; IP54, IP55, IP65, IP66; ATEX;
– Materials: powder coated carbon steel, 5052 aluminum, 304/316 stainless steel
– Construction options: continuous hinge clamp, 3 point latch, concealed hinge
– Lead time: Standard enclosures can ship in as little as 5 days

Application Scenarios:
– Industrial environments requiring electrical equipment protection
– Installations needing adherence to specific NEMA, IP, or hazardous area
– Custom-fit or challenging installation scenarios needing tailored enclosure
– Global deployments requiring compliance with international enclosure standards

Pros:
– Wide range of enclosure ratings and material options for varied applications
– Custom enclosure design and fabrication to exact customer specifications
– Fast turnaround time for standard, make-to-order enclosures (as little as 5
– Direct online ordering and quote process for convenience

Cons:
– All items are make-to-order, possibly limiting immediate availability
– Detailed technical information (e.g., dimensional tolerances, load ratings) not

11 Custom Electrical Enclosure Manufacturers in 2025 | Metoree

50 Best Electrical Enclosures Manufacturers – iEVPower

Product Details:
Custom and standard electrical enclosures, including wall mount enclosures, MCC drop-over enclosures, multi-door models, and enclosures designed for electrical and pneumatic devices. Products are available in various materials such as carbon steel, aluminum, galvanized steel, and stainless steel, with multiple latch and hinge options.

Technical Parameters:
– Over 1300 standard enclosure configurations
– Material options: carbon steel, aluminum, galvanized steel, 304 & 316 stainless
– Certifications: UL, C-UL, ATEX, IECEx, ISO 9001:2015
– NEMA types: 1, 3, 3R, 3S, 4, 4X, 12

Application Scenarios:
– Industrial electrical systems
– Energy, telecom, and OEM equipment
– Installations requiring international certification
– Projects needing custom or modified enclosures

Pros:
– Extensive customization options, including free online customization tool
– Third-party certifications ensuring compliance with global standards
– Wide material selection for various environments
– Advanced manufacturing technology ensuring quality and repeatability

Cons:
– Some companies specialize in low-volume, high-mix, which may not be optimal for
– Focus on custom and specialized products may result in longer lead times

20 Best Electrical Cabinet Manufacturers in the USA

Product Details:
Electrical enclosures and cabinets for residential, commercial, and industrial applications, including modular, weatherproof, and NEMA-rated enclosures designed to protect electrical and electronic components.

Technical Parameters:
– NEMA-rated and UL-listed enclosures (various ratings such as NEMA 4X for
– Modular and scalable enclosure designs (freestanding and wall-mounted options)
– Materials such as stainless steel for enhanced corrosion resistance
– Compliance with industry standards for power management, energy efficiency, and

Application Scenarios:
– Industrial automation and manufacturing facilities
– Data centers and telecommunication environments
– Marine and chemical manufacturing plants requiring corrosion-resistant solutions
– Commercial and residential electrical infrastructure

Pros:
– High durability and long lifespan even in harsh environments
– Customization options for tailored enclosure solutions
– Corrosion, moisture, and dust resistance for improved component protection
– Proven use in critical industries (telecom, data, energy, marine, manufacturing)

Cons:
– Limited financial accessibility for some products due to high performance (some
– Technical specifications for each enclosure model are not fully disclosed on

US-Manufactured Enclosures & Boxes | Polycase

Electrical Enclosure Cabinets – Hammond Mfg.

Product Details:
Hammond Manufacturing offers a wide range of electrical enclosure cabinets, including mild steel, stainless steel, aluminum, and non-metallic enclosures. Their offerings also cover disconnect enclosures, modular freestanding enclosures, operator interface enclosures, wireway & trough, commercial enclosures, climate control products, data communication infrastructure, and general accessories. Thousands of enclosure sizes and options are available to suit various needs, with advanced search tools and supporting resources.

Technical Parameters:
– Available in materials: mild steel (Type 12, 4), stainless steel (Type 4X),
– Enclosure sizing specified in HxW(xD), default in inches or optional in
– Racks and cabinets specified by rack units (U), e.g., 36U, 44U
– Climate control solutions and enclosure modifications available

Application Scenarios:
– Industrial and commercial electrical protection
– Data communication infrastructure installations
– Power distribution and transformer housing
– Environmental and climate-controlled applications

Pros:
– Extensive selection of enclosure types, sizes, and materials for diverse
– Product search tools, cross-referencing, and technical support resources are
– Climate control and modification services enhance product versatility
– Recognized focus on quality products and service excellence

Cons:
– Technical details, specifications, and certifications for individual products
– No explicit pricing or comparison information available on the main product

Electrical Enclosure Manufacturer & Fabrication Services | Bison Profab

Product Details:
Bison ProFab designs and manufactures a wide range of electrical enclosures, including stock and custom options, with a strong focus on custom enclosures (95% of production). Their product lines include NEMA, IP, UL Listed, PRO-TEX, and ATEX/IECEx certified enclosures, offered in materials like aluminum, carbon steel, stainless steel, and powder coated finishes. Mounting options include wall, pole, pad, walk-in, and free-standing. Product types span electrical enclosures, traffic control cabinets, solar battery boxes, seismic-rated, temperature-controlled, and IT enclosures.

Fabrication capabilities cover punching, laser cutting, press braking, welding, and powder coating.

Technical Parameters:
– NEMA enclosure ratings: 1, 2, 3, 3R, 4, 4X, 12, 13; custom NEMA enclosures also
– IP protection classes: IP44, IP54, IP55, IP56, IP57, IP65, IP66.
– ATEX/IECEx certified options for hazardous/explosive environments with 304 and
– Multiple sizes and dimensions available; supports specification by height

Application Scenarios:
– Electrical equipment protection in industrial settings.
– Traffic control systems including M, G, P, R, flasher, CCTV, and Caltrans
– Solar energy installations, including battery storage solutions.
– Industries such as oil & gas production, telecommunications, rail,

Pros:
– Extensive selection of standard and custom enclosure solutions, including
– Fabrication in diverse materials (aluminum, carbon steel, stainless steel) for
– Rigorous manufacturing quality control, ISO 9001 registered, and ability to
– Quick turnaround and competitive pricing especially for custom enclosures.

Cons:
– Majority of production (95%) is custom, which may not suit buyers needing
– Possible complexity in specifying and ordering due to extensive customization

Comparison Table

Frequently Asked Questions (FAQs)

How do I find reputable enclosure manufacturers in the USA?
Start by researching online directories, trade shows, and industry associations with lists of verified manufacturers. You can also request referrals from industry peers or consult business networks like LinkedIn for recommendations and reviews.

What factors should I consider when choosing an enclosure manufacturer?
Consider their experience in your industry, production capabilities, material options, customization services, certifications (such as ISO), quality control measures, and customer service reputation.

Do US-based enclosure manufacturers offer custom design services?
Many US manufacturers provide custom enclosure design services, allowing you to tailor dimensions, materials, mounting options, and finishes to meet your exact requirements. Always ask about their design team’s experience and prototyping capabilities.

How can I check the quality of enclosures from a manufacturer?
Request product samples, visit the factory if possible, and ask about their quality assurance processes. Look for third-party certifications, and read customer testimonials to gauge reliability and product performance.

What information should I provide when requesting a quote from an enclosure manufacturer?
Share your required dimensions, material preferences, quantity, application details, special features (like ventilation or waterproofing), and any needed certifications. Clear specifications help the manufacturer provide an accurate and competitive quote.