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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. plastic junction box enclosure with clear lid
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    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. plastic junction box with hinged cover, NEMA 4X rated
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    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
  3. ZH-141406 New
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    ZH-141406
    As low as $74.71 per unit
    14.60 x 14.60 x 7.72 in.
    371 x 371 x 196 mm.
    Material: Polycarbonate
  4. HD-44FMMT Black NEMA 6P rated waterproof polycarbonate enclosure for electronics - 4.63 x 4.63 x 2.36 inches
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    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
  5. ML-34F*15 Gray outdoor waterproof enclosure rated NEMA 4x and NEMA 6P - 4.53 x 3.56 x 2.25 inches
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    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
  6. AN-15P Natural diecast aluminum enclosure for electronics - 5.91 x 2.52 x 1.45 inches
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    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
  7. ZQ-121206 New
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    ZQ-121206
    As low as $59.65 per unit
    12.60 x 12.60 x 7.72 in.
    320 x 320 x 196 mm.
    Material: Polycarbonate
  8. Polycase ML-36F plastic enclosures with screw down cover
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    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
  9. Polycase WQ-70 outdoor waterproof electrical junction box
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    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
  10. SG-17-02 Gray plastic electrical box for outdoor applications - 3.31 x 3.23 x 3.31 inches
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    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
  11. ZQ-141406 New
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    ZQ-141406
    As low as $70.96 per unit
    14.60 x 14.60 x 7.72 in.
    371 x 371 x 196 mm.
    Material: Polycarbonate
  12. outdoor waterproof enclosure

    Save time and money with Polycase customization services

    pricing in 90 seconds

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  13. Polycase WQ-77 weatherproof junction box
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    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
  14. 12x10x6 waterproof electrical enclosure
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    ZH-121006
    As low as $55.48 per unit
    12.60 x 10.60 x 7.70 in.
    320 x 269 x 196 mm.
    Material: Polycarbonate
  15. AN-23F Natural diecast aluminum enclosure with flanges for wall mounting - 10.24 x 6.3 x 3.56 inches
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    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
  16. 6x6x4 electrical enclosure
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    ZH-060604
    As low as $39.18 per unit
    6.40 x 6.40 x 5.72 in.
    163 x 163 x 145 mm.
    Material: Polycarbonate
  17. Small black plastic waterproof enclosure
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    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
  18. Clear cover hinged enclosure
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    ZH-040404
    As low as $27.91 per unit
    4.40 x 4.40 x 4.83 in.
    112 x 112 x 123 mm.
    Material: Polycarbonate
  19. WH-02-02 Gray outdoor hinged waterproof NEMA electrical enclosure - 5.11 x 3.93 x 2.75 inches
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    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
  20. weatherproof plastic junction box NEMA and IP
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    ML-48F
    As low as $12.43 per unit
    7.61 x 4.61 x 2.26 in.
    193 x 117 x 57 mm.
    Material: Polycarbonate
  21. Clear cover lockable electrical box
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    ZH-101006
    As low as $52.79 per unit
    10.40 x 10.40 x 7.52 in.
    264 x 264 x 191 mm.
    Material: Polycarbonate
  22. WQ-83
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    WQ-83
    As low as $283.22 per unit
    32.68 x 24.80 x 7.36 in.
    830 x 630 x 187 mm.
    Material: Polycarbonate
  23. Hinged lockable enclosure
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    ZH-100802
    As low as $46.46 per unit
    10.40 x 8.40 x 4.22 in.
    264 x 213 x 107 mm.
    Material: Polycarbonate
  24. outdoor waterproof enclosure

    Save time and money with Polycase customization services

    pricing in 90 seconds

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Customization Services

outdoor electrical enclosure

CNC Machining

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