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Electrical Enclosures & Boxes

Outdoor electrical enclosures from Polycase are weatherproof, making them an ideal solution for industrial outdoor applications. Our electrical enclosure boxes are UL & cUL Listed and designed to protect sensitive equipment in harsh environments, meeting and exceeding many NEMA and IP ratings. Available in a variety of sizes, styles, and materials, it’s easy to find the perfect solution for any outdoor electrical application. Outdoor electrical boxes are available in stainless steel, carbon steel, aluminum, and polycarbonate, making them ideal for a wide range of industries such as automation, alternative energy, telecommunications, and more.

Read our guide on common types of electrical enclosures, or find more information below.

Choosing an Electrical Enclosure for Your Application

An electrical enclosure is often the only thing protecting sensitive electrical and electronic equipment against water, dust, corrosive substances, or other environmental hazards. That’s why it’s so important to thoroughly evaluate an enclosure that you’re using for any demanding application, whether it’s an electrical junction box for outdoor receptacles or a control panel enclosure for a critical piece of machinery.

So, how can you find the enclosure that’s right for your application? These are some key factors you should be familiar with:

  • Weatherproofing Features: Enclosures for outdoor applications should include weatherproofing features such as a waterproof/dustproof gasket and mated parts to keep out water and particulates.
  • IP Rating or NEMA Rating: These two systems rate key performance factors such as (depending on the system) water protection, dust protection and corrosion resistance. Look for a UL Listed rating to ensure the enclosure has been independently tested to meet its rating.
  • Material: Choose an outdoor enclosure made from durable materials like aluminum or stainless steel, or non-metallic enclosures made from polycarbonate and/or fiberglass-reinforced polycarbonate. These offer more reliable performance than common alternatives like PVC.
  • Security: Many outdoor enclosures need to be secured against unauthorized access. Look for features like a built-in padlock hasp or a locking hinged cover if security is a factor for your application.

Shop Polycase’s Electrical Enclosure Selection

For over 65 years, Polycase has provided high-quality enclosures at reasonable prices to the electrical and electronics industries. Today, we’re proud to offer our best-ever selection of electrical enclosures, including:

  • IP and NEMA enclosures with ratings verified by UL
  • Numerous configurations available, including optional wall-mount flanges, hinged covers, and built-in knockouts
  • Wide range of material options including polycarbonate, aluminum, and stainless steel enclosures
  • Incredibly fast and easy enclosure customization, with instant quotes on CNC machining and digital printing services
  • Accessories available for protecting conductors and maintaining ingress ratings

Browse our selection of outdoor enclosures here and find one that’s perfect for your application. To find what you need more quickly, use the filter options and select the characteristics you’re looking for.

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  1. ML-57F
    As low as $15.79 per unit
    8.74 x 5.24 x 2.26 in.
    222 x 133 x 57 mm.
    Material: Polycarbonate
  2. HP-070504
    As low as $18.86 per unit
    7.22 x 5.22 x 4.28 in.
    183 x 133 x 109 mm.
    Material: Polycarbonate
  3. WQ-51
    As low as $29.10 per unit
    10.24 x 6.30 x 5.12 in.
    260 x 160 x 130 mm.
    Material: Polycarbonate
  4. ZH-141406
    As low as $74.71 per unit
    14.60 x 14.60 x 7.22 in.
    371 x 371 x 183 mm.
    Material: Polycarbonate
  5. HD-44F
    As low as $7.64 per unit
    4.63 x 4.63 x 2.36 in.
    118 x 118 x 60 mm.
    Material: Polycarbonate
  6. ML-34F
    As low as $8.67 per unit
    4.53 x 3.56 x 2.25 in.
    115 x 90 x 57 mm.
    Material: Polycarbonate
  7. AN-15P
    As low as $12.68 per unit
    5.91 x 2.52 x 1.45 in.
    150 x 64 x 37 mm.
    Material: Aluminum
  8. ZQ-121206
    As low as $59.65 per unit
    12.60 x 12.60 x 7.22 in.
    320 x 320 x 183 mm.
    Material: Polycarbonate
  9. ML-36F
    As low as $11.01 per unit
    6.50 x 3.25 x 3.39 in.
    165 x 83 x 86 mm.
    Material: Polycarbonate
  10. WQ-70
    As low as $62.65 per unit
    13.78 x 13.78 x 5.97 in.
    350 x 350 x 152 mm.
    Material: Polycarbonate
  11. SG-17
    As low as $14.72 per unit
    3.31 x 3.23 x 3.31 in.
    84 x 82 x 84 mm.
    Material: Polycarbonate
  12. outdoor electrical enclosure

    NEW | IP-RATED HP SERIES

    Available with a wide range of options and accessories to suit your application

    SHOP THE NEW HP SERIES
  13. HP-100604
    As low as $26.96 per unit
    10.22 x 6.22 x 4.28 in.
    260 x 158 x 109 mm.
    Material: Polycarbonate
  14. ZQ-141406
    As low as $70.96 per unit
    14.60 x 14.60 x 7.22 in.
    371 x 371 x 183 mm.
    Material: Polycarbonate
  15. ML-92F
    As low as $44.57 per unit
    12.00 x 9.00 x 4.26 in.
    305 x 229 x 108 mm.
    Material: Polycarbonate
  16. HP-060504
    As low as $16.74 per unit
    6.22 x 5.22 x 4.28 in.
    158 x 133 x 109 mm.
    Material: Polycarbonate
  17. WQ-77
    As low as $124.62 per unit
    23.70 x 15.75 x 7.17 in.
    602 x 400 x 182 mm.
    Material: Polycarbonate
  18. ZH-121006
    As low as $55.48 per unit
    12.60 x 10.60 x 7.22 in.
    320 x 269 x 183 mm.
    Material: Polycarbonate
  19. AN-23F
    As low as $49.85 per unit
    10.24 x 6.30 x 3.56 in.
    260 x 160 x 90 mm.
    Material: Aluminum
  20. ZH-060604
    As low as $39.18 per unit
    6.40 x 6.40 x 5.22 in.
    163 x 163 x 133 mm.
    Material: Polycarbonate
  21. 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
  22. ZH-040404
    As low as $27.91 per unit
    4.40 x 4.40 x 4.33 in.
    112 x 112 x 110 mm.
    Material: Polycarbonate
  23. WH-02
    As low as $8.58 per unit
    5.11 x 3.93 x 2.75 in.
    130 x 100 x 70 mm.
    Material: ABS, Polycarbonate
  24. outdoor electrical enclosure

    NEW | IP-RATED HP SERIES

    Available with a wide range of options and accessories to suit your application

    SHOP THE NEW HP SERIES

267 Items

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Customization Services

outdoor electrical enclosure

CNC Machining

Guaranteed accuracy, no scrap, with 1-3 week lead times; saving you time and money. It's that simple.
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Digital Printing

Enhance your product, impress your customers with high-quality graphics printed directly on the enclosure.
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