NEMA Enclosures & Boxes

NEMA enclosures and boxes are weatherproof and watertight, protecting sensitive equipment in harsh industrial environments. NEMA electrical enclosures come in a variety of materials— ranging from plastic to metal — and meet or exceed NEMA standards based on independent UL testing. A variety of sizes and styles are available for indoor and outdoor use. Material options include polycarbonate, ABS, aluminum, stainless steel and carbon steel.

Regardless of application, Polycase's NEMA-rated enclosures can be trusted to keep sensitive electrical components protected. NEMA enclosures have been certified by UL to the following NEMA Type ratings: 1, 2, 3, 3R, 3X, 3RX, 3S, 3SX, 4, 4X, 5, 6, 6P, 12, 12K and 13. NEMA boxes are ideal for electrical applications in industries such as telecommunications, industrial automation, alternative energy, marine, wastewater and more. We also offer a full selection of IP-rated boxes and enclosures.

What Is a NEMA Enclosure

The National Electrical Manufacturers Association (NEMA) is a trade organization that maintains a standard rating system for enclosures, known as the NEMA rating system. These ratings allow designers and manufacturers to easily evaluate an enclosure’s protective qualities. NEMA ratings specify various degrees of protection against environmental conditions. These include everything from light splashing and falling dirt to sleet, corrosion, submersion, windblown dust and other severe hazards.

A NEMA 1 rating, for example, is considered suitable for everyday indoor use and basic protection. NEMA 4X enclosures, on the other hand, are built with heavy-duty gaskets suitable for both indoor and outdoor applications, and they also offer corrosion resistance. At the top end of the scale, NEMA 6P enclosures can prevent the ingress of water even during prolonged submersion, making them invaluable for applications such as junction boxes in flood-prone areas. 

If you know your enclosure requires NEMA-rated performance, the first step is to determine which NEMA enclosure type your application demands. Once you know your specified enclosure rating and the level of protection it offers, you’re ready to discover the wide variety of NEMA enclosures available from Polycase.

NEMA-Rated Electrical Enclosures from Polycase

On this page, you’ll find Polycase’s full selection of NEMA-rated enclosures. Here are a few more factors to consider when selecting a NEMA enclosure model: 

  • Enclosure Material: Each enclosure material offers different performance characteristics, whether that’s the natural RFI shielding of aluminum or the corrosion resistance of stainless steel. Check out our enclosure material selection guide for help choosing the perfect material. 
  • Options and Configurations: Many of our enclosure models offer built-in configuration options. These include wall mount flanges, hinged covers and even pre-cut knockouts to accommodate your connectors and cables. Each model’s product page includes a list of available options, as well as a variety of enclosure accessories
  • Other Ratings: Your enclosures might also require ingress protection (IP) ratings, UL 508A flame resistance ratings or IK impact ratings. Polycase offers enclosures with all of the above, so check the enclosure’s description for additional ratings!
  • Customization: Need customized cutouts, text or images on your enclosure? Polycase’s in-house customization options include CNC machining and digital printing, with instant quotes available.

294 Items

/
View as Grid List
Page
1 of 14
  1. AN-11F
    As low as $13.63 per unit
    1.97 x 1.77 x 1.12 in.
    50 x 45 x 28 mm.
    Material: Aluminum
  2. AN-11P
    As low as $5.91 per unit
    1.97 x 1.77 x 1.12 in.
    50 x 45 x 28 mm.
    Material: Aluminum
  3. AN-18F
    As low as $13.72 per unit
    2.19 x 1.61 x 1.22 in.
    56 x 41 x 31 mm.
    Material: Aluminum
  4. AN-18P
    As low as $6.17 per unit
    2.19 x 1.61 x 1.22 in.
    56 x 41 x 31 mm.
    Material: Aluminum
  5. WA-20
    As low as $4.66 per unit
    2.28 x 2.52 x 1.38 in.
    58 x 64 x 35 mm.
    Material: ABS
  6. WA-20F
    As low as $4.66 per unit
    2.28 x 2.52 x 1.38 in.
    58 x 64 x 35 mm.
    Material: ABS
  7. WC-20
    As low as $5.74 per unit
    2.28 x 2.52 x 1.38 in.
    58 x 64 x 35 mm.
    Material: Polycarbonate
  8. WC-20F
    As low as $5.48 per unit
    2.28 x 2.52 x 1.38 in.
    58 x 64 x 35 mm.
    Material: Polycarbonate
  9. WP-20
    As low as $5.59 per unit
    2.28 x 2.52 x 1.38 in.
    58 x 64 x 35 mm.
    Material: Polycarbonate
  10. WP-20F
    As low as $5.21 per unit
    2.28 x 2.52 x 1.38 in.
    58 x 64 x 35 mm.
    Material: Polycarbonate
  11. AN-01F
    As low as $6.25 per unit
    2.52 x 2.28 x 1.38 in.
    64 x 58 x 35 mm.
    Material: Aluminum
  12. outdoor electrical enclosure

    Save time and money with Polycase customization services

    pricing in 90 seconds

    Learn More
  13. AN-01P
    As low as $5.91 per unit
    2.52 x 2.28 x 1.38 in.
    64 x 58 x 35 mm.
    Material: Aluminum
  14. SK-11
    As low as $8.51 per unit
    2.56 x 2.56 x 2.24 in.
    65 x 65 x 57 mm.
    Material: Polycarbonate
  15. HD-22F
    As low as $3.88 per unit
    2.63 x 2.63 x 1.63 in.
    67 x 67 x 41 mm.
    Material: Polycarbonate
  16. ML-22F
    As low as $5.80 per unit
    2.63 x 2.63 x 1.63 in.
    67 x 67 x 41 mm.
    Material: Polycarbonate
  17. AN-19F
    As low as $18.49 per unit
    3.13 x 2.93 x 2.05 in.
    80 x 74 x 52 mm.
    Material: Aluminum
  18. AN-19P
    As low as $10.49 per unit
    3.13 x 2.93 x 2.05 in.
    80 x 74 x 52 mm.
    Material: Aluminum
  19. WA-31
    As low as $6.32 per unit
    3.23 x 3.15 x 2.17 in.
    82 x 80 x 55 mm.
    Material: ABS
  20. WA-31F
    As low as $6.92 per unit
    3.23 x 3.15 x 2.17 in.
    82 x 80 x 55 mm.
    Material: ABS
  21. WC-31
    As low as $8.92 per unit
    3.23 x 3.15 x 2.17 in.
    82 x 80 x 55 mm.
    Material: Polycarbonate
  22. WC-31F
    As low as $9.36 per unit
    3.23 x 3.15 x 2.17 in.
    82 x 80 x 55 mm.
    Material: Polycarbonate
  23. WP-31
    As low as $8.92 per unit
    3.23 x 3.15 x 2.17 in.
    82 x 80 x 55 mm.
    Material: Polycarbonate
  24. outdoor electrical enclosure

    Save time and money with Polycase customization services

    pricing in 90 seconds

    Learn More

294 Items

/
View as Grid List
Page
1 of 14

You added product to the Comparison List

Customization Services

CNC Machining

From simple cutouts to threaded or counterbored holes, we can machine virtually any size or shape opening.
Learn More

Digital Printing

Skip the label with our vibrant, full-color graphics printed right onto your enclosure.
Learn More

Enhance your product. Impress your customers.

Get Instant quote
outdoor waterproof enclosure

We use cookies to ensure that we give you the best experience on our website. To learn more, go to the Privacy Page.

Close