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Outdoor Junction Boxes

Protect sensitive electrical connections in any environment, including underground, with a Polycase outdoor junction box. Designed to meet NEMA and IP ratings, our waterproof junction boxes are ideal for outdoor use but versatile enough for indoor applications too. Choose from a variety of styles, including models with hinged covers, knockouts, wall-mount, or pole-mount options. Available in plastic, aluminum, and steel, and offered in a range of sizes, Polycase makes it easy to find the perfect electrical junction box for your needs. Read our guide to electrical junction box types.

Looking for tips to help you choose the ideal junction box for your application? Find out more key info on junction boxes below.

Key Features and Applications of Outdoor Junction Boxes

Depending on its size, your facility might have dozens, hundreds, or even thousands of key electrical connections that need protection from environmental conditions. Numerous types of connections require junction boxes — from electrical wiring splices to electrical outlet boxes to switch boxes and beyond. Read our guide on junction box types to learn more about the many specific types of junction boxes on the market, including indoor electrical enclosures, cases for light fixtures, receptacles, and other applications.

It’s critical to match the design features your application requires to a high-quality junction box that fulfills them. For example, a metal junction box is typically a must-have if your electrical connectors require RFI shielding and/or you’re using a metal-sheathed cable. Meanwhile, a plastic junction box is generally the standard choice for applications with non-metallic cable and cable clamps. However, the PVC boxes common in residential applications often aren’t up to the rigors of outdoor and industrial use, which makes materials like polycarbonate a better choice for heavy-duty applications.

Weather and hazard resistance is also a major factor for junction boxes used in demanding applications. Features such as weatherproof gaskets provide critical protection, and NEMA or IP ratings serve as useful guidelines for finding an enclosure with the right protective features. To learn more about choosing an enclosure with the right protective qualities, check out our guide to evaluating junction boxes.

Choosing an Outdoor Junction Box from Polycase

Polycase offers hundreds of weatherproof box models in different shapes, sizes, styles, and NEMA/IP ratings. From 304 stainless steel to polycarbonate plastic with a fiberglass reinforced base, we provide a broad range of durable material choices. On top of the previously mentioned features, our selection also includes options such as locking box covers for secure access control.

Browse our outdoor enclosures to find the right electrical box for your application. Need customized cutouts or printing on your project? Get started with an instant quote now on our in-house enclosure customization.

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  1. WQ-83
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    WQ-83 Hinged Weatherproof Enclosure
    As low as $283.22 per unit
    Internal: 29" x 22" x 6.9"
    752 x 560 x 176 mm
    External: 32" x 24" x 7.3"
    830 x 630 x 187 mm
    Material: Polycarbonate
  2. WQ-81
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    WQ-81 Hinged Weatherproof Enclosure
    As low as $216.91 per unit
    Internal: 25" x 18" x 6.9"
    660 x 460 x 176 mm
    External: 28" x 20" x 7.3"
    730 x 530 x 187 mm
    Material: Polycarbonate
  3. WQ-80-02 Gray outdoor waterproof hinged electrical enclosure - 24.8 x 20.87 x 10.04 inches
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    WQ-80 NEMA Hinged Enclosure
    As low as $269.68 per unit
    Internal: 21" x 18" x 9.7"
    558 x 458 x 249 mm
    External: 24" x 20" x 10"
    630 x 530 x 255 mm
    Material: Polycarbonate
  4. SA-54
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    SA-54 NEMA Stainless Steel Enclosure
    As low as $975.95 per unit
    Internal: 23" x 23" x 10"
    601 x 601 x 259 mm
    External: 24" x 24" x 10"
    610 x 610 x 254 mm
    Material: Stainless Steel
  5. Steel enclosure for electrical equipment
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    SB-54 NEMA Steel Enclosure
    As low as $276.75 per unit
    Internal: 23" x 23" x 10"
    601 x 601 x 259 mm
    External: 24" x 24" x 10"
    610 x 610 x 254 mm
    Material: Steel
  6. SA-52
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    SA-52 NEMA Stainless Steel Enclosure
    As low as $801.68 per unit
    Internal: 23" x 19" x 8.1"
    601 x 500 x 208 mm
    External: 24" x 20" x 8.0"
    610 x 508 x 203 mm
    Material: Stainless Steel
  7. Lockable enclosure
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    SB-52 NEMA Steel Enclosure
    As low as $237.02 per unit
    Internal: 23" x 19" x 8.1"
    601 x 500 x 208 mm
    External: 24" x 20" x 8.0"
    610 x 508 x 203 mm
    Material: Steel
  8. SA-51
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    SA-51 NEMA Stainless Steel Enclosure
    As low as $690.69 per unit
    Internal: 23" x 15" x 8.1"
    601 x 398 x 208 mm
    External: 24" x 16" x 8.0"
    610 x 406 x 203 mm
    Material: Stainless Steel
  9. SB-51
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    SB-51 NEMA Steel Enclosure
    As low as $202.39 per unit
    Internal: 23" x 15" x 8.1"
    601 x 398 x 208 mm
    External: 24" x 16" x 8.0"
    610 x 406 x 203 mm
    Material: Steel
  10. Polycase WQ-77 weatherproof junction box
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    WQ-77 Hinged Weatherproof Enclosure
    As low as $124.62 per unit
    Internal: 21" x 14" x 6.8"
    556 x 357 x 173 mm
    External: 23" x 15" x 7.1"
    602 x 400 x 182 mm
    Material: Polycarbonate
  11. SA-49
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    SA-49 Stainless Steel Electrical Boxes
    As low as $816.05 per unit
    Internal: 19" x 19" x 12"
    500 x 500 x 310 mm
    External: 20" x 20" x 12"
    508 x 508 x 305 mm
    Material: Stainless Steel
  12. outdoor electrical enclosure

    ZH SERIES | NO FEET OPTION

    The ZH Series is now available with more mounting options to suit your needs

    SHOP NOW
  13. SB-49
    Add to Compare Add to Wish List
    SB-49 NEMA Steel Enclosure
    As low as $229.74 per unit
    Internal: 19" x 19" x 12"
    500 x 500 x 310 mm
    External: 20" x 20" x 12"
    508 x 508 x 305 mm
    Material: Steel
  14. Large stainless steel enclosures
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    SA-46 Large Stainless Steel Enclosure
    As low as $603.61 per unit
    Internal: 19" x 15" x 8.1"
    500 x 398 x 208 mm
    External: 20" x 16" x 8.0"
    508 x 406 x 203 mm
    Material: Stainless Steel
  15. Lockable box
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    SB-46 NEMA Steel Enclosure
    As low as $172.58 per unit
    Internal: 19" x 15" x 8.1"
    500 x 398 x 208 mm
    External: 20" x 16" x 8.0"
    508 x 406 x 203 mm
    Material: Steel
  16. WQ-76-02 Gray outdoor waterproof hinged electrical enclosure - 19.69 x 15.75 x 7.87 inches
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    WQ-76 NEMA Hinged Enclosure
    As low as $138.94 per unit
    Internal: 18" x 14" x 7.6"
    460 x 362 x 193 mm
    External: 19" x 15" x 7.8"
    500 x 400 x 200 mm
    Material: Polycarbonate
  17. Polycase WH-32 waterproof electrical junction box for outdoor or indoor applications
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    WH-32 Hinged NEMA Enclosure
    As low as $62.88 per unit
    Internal: 18" x 14" x 6.0"
    461 x 362 x 154 mm
    External: 19" x 15" x 6.3"
    500 x 400 x 161 mm
    Material: ABS, Polycarbonate
  18. WQ-73-02 Gray outdoor waterproof hinged electrical enclosure - 17.72 x 13.78 x 6.3 inches
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    WQ-73 NEMA Hinged Enclosure
    As low as $101.29 per unit
    Internal: 15" x 12" x 6.0"
    405 x 305 x 153 mm
    External: 17" x 13" x 6.3"
    450 x 350 x 160 mm
    Material: Polycarbonate
  19. Gray hinged electrical enclosure with Mounting Feet and Stainless Steel Latch
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    ZH-161407 Waterproof Electrical Box
    As low as $81.52 per unit
    Internal: 15" x 13" x 7.8"
    397 x 346 x 200 mm
    External: 16" x 14" x 8.2"
    422 x 371 x 210 mm
    Material: Polycarbonate
  20. Outdoor weatherproof plastic electrical enclosure made from durable polycarbonate
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    ZQ-161407 NEMA Electrical Junction Box
    As low as $77.37 per unit
    Internal: 15" x 13" x 7.8"
    397 x 346 x 200 mm
    External: 16" x 14" x 8.2"
    422 x 371 x 210 mm
    Material: Polycarbonate
  21. SA-37-01 Natural stainless steel hinged electrical enclosure - 15.75 x 15.75 x 7.87 inches
    Add to Compare Add to Wish List
    SA-37 NEMA Stainless Steel Enclosure
    As low as $437.84 per unit
    Internal: 15" x 15" x 7.7"
    392 x 392 x 197 mm
    External: 15" x 15" x 7.8"
    400 x 400 x 200 mm
    Material: Stainless Steel
  22. SB-37
    Add to Compare Add to Wish List
    SB-37 NEMA Steel Enclosure
    As low as $113.08 per unit
    Internal: 15" x 15" x 7.7"
    392 x 392 x 197 mm
    External: 15" x 15" x 7.8"
    400 x 400 x 200 mm
    Material: Steel
  23. SA-43
    Add to Compare Add to Wish List
    SA-43 NEMA Stainless Steel Enclosure
    As low as $390.52 per unit
    Internal: 15" x 13" x 7.7"
    392 x 346 x 197 mm
    External: 15" x 13" x 7.8"
    400 x 355 x 200 mm
    Material: Stainless Steel
  24. outdoor electrical enclosure

    ZH SERIES | NO FEET OPTION

    The ZH Series is now available with more mounting options to suit your needs

    SHOP NOW

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