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NEMA 13 Enclosures

NEMA 13 enclosures are designed to protect electrical equipment from dust, sprayed water, oil and non-corrosive coolant in indoor environments. Dependable NEMA 13 boxes are available in plastic and aluminum in a variety of styles and sizes. NEMA 13 enclosures are often found in industrial settings where dripping and splashing of oil and coolant are a perpetual concern for sensitive electronics.

More information on the Type 13 rating can be found in our guide to NEMA 13 — or see our quick guide to the basics of NEMA 13 enclosures below.

Fast Facts on NEMA Enclosures

The National Electrical Manufacturers Association (NEMA) maintains a set of standards for electrical enclosures known as NEMA ratings. These ratings denote specific protective qualities of electrical enclosures and establish their degrees of protection on a scale from 1 to 13 (although higher ratings don’t necessarily correlate with more protection).

Through NEMA ratings, device designers can easily identify the enclosure type that provides the right degree of protection for their devices. Read our ultimate NEMA enclosure guide to learn the specifics of the various NEMA types and what kind of protection each rating provides for the enclosed equipment.

Basics of the NEMA 13 Rating

A NEMA 13 rated enclosure is designed for indoor use in a variety of harsh environmental conditions. The definition of the NEMA 13 rating includes protection against:

  • Access to hazardous parts
  • Solid foreign objects (including lint, flyings, falling dirt and circulating dust)
  • Ingress of water (including dripping, light splashing and hose-directed water)
  • Oil and coolant seepage from non-corrosive liquids

The NEMA 13 rating has similar characteristics to the widely used NEMA 12 indoor enclosure rating, but it adds additional protection against oil and coolant that NEMA 12 does not offer. This makes NEMA 13 models popular for a variety of indoor applications, including junction boxes, control panels and many other critical devices.

Note that, although it’s the highest number on the NEMA rating scale, NEMA 13 is not the highest degree of protection available. A NEMA 13 enclosure does not offer protection against corrosion or submersion unless it’s also rated for a higher NEMA rating such as NEMA 4X or NEMA 6P.

NEMA 13 Enclosures from Polycase

Polycase’s wide selection of NEMA rated enclosures includes numerous NEMA 13 enclosure models. We offer these enclosures in a wide range of durable materials including polycarbonate, aluminum and ABS plastic, and many are also built for compliance with outdoor enclosure standards like NEMA 4, NEMA 4X and NEMA 6P.

Many of our most popular NEMA 13 models include convenient features and options like mounting flanges and hinged covers. Looking for DIN rails or other accessories? Just check the enclosure’s Accessories tab on its product page to see available add-ons. Finally, don’t forget the easy enclosure customization options available via our in-house digital printing and CNC machining.

Browse all of Polycase’s NEMA 13 enclosures here and find the perfect solution for your enclosure application. Seeking NEMA 4, NEMA 6 or other enclosures for outdoor use? Shop our complete range of outdoor enclosures here.

233 Items

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  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. Timer Module

    Customized enclosures in as little as 1 week

    Minimal cost. Maximum impact.

    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. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. WP-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
  24. Timer Module

    Customized enclosures in as little as 1 week

    Minimal cost. Maximum impact.

    Learn More

233 Items

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Customization Services

CNC Machining

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

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