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Why Choose NEMA 3R?

NEMA 3R Enclosure

When it comes to outdoor electrical safety, investing in quality is always the right choice. Find high-quality NEMA 3R enclosure options in a wide range of configurations and durable metals. NEMA 3R electrical enclosures are ideal for general-purpose outdoor environments in hot and cold climates. At Bison Profab, we also offer extensive customization options and accessories for maximum operational performance.

Create a Custom Enclosure

If you don't see what you need here, please contact our team for a custom quote.

Custom NEMA 3R Enclosure Accessories 

Steel, stainless steel, aluminum NEMA 3R enclosure that delivers market-driven cost savings while going beyond industry expectations in quality and durability. 

When an outdoor enclosure installs faster and easier in any weather (thanks to quality that eliminates unplanned amendments on the job site) the time savings yields a profit no lowball quote can match.

Not sure which NEMA enclosure to choose? Click here to get guidance from our applications experts.

NEMA 3R Enclosure Protection

NEMA 3R enclosures offer a measure of protection against many types of weather:

  • Rain and sleet
  • Snow and ice
  • Hail (may require customization for impact resistance)
  • Dirt and mud
  • Dripping and splashes

A NEMA 3R enclosure also features vents that help with airflow and heat dissipation. This type of enclosure works well for outdoor applications at data centers, power generation facilities, telecommunications installations, and exterior equipment for manufacturing facilities. Ventilated weather-resistant enclosures are also an excellent choice for rooftop electrical systems used by hospitals, big box retailers, airports, warehouses, and factories.

Advantages of Ventilated Enclosures

Weather resistance is critical for work safety and equipment protection in outdoor applications. NEMA 3R enclosures can help keep personnel safe from accidental contact or electrocution hazards. Keeping rain, snow, and ice away from control panels, wires, and electronic devices can prevent short circuits and system failure.

Many types of electrical systems and industrial equipment, such as motors and power cables, need a way to dissipate heat. Ventilated enclosures can prevent overheating, system damage, and fire hazards. We also offer accessories such as fans and air conditioners to further control temperatures.

Types of NEMA 3R Enclosures

NEMA 3R enclosures are versatile and practical for outdoor applications in countless industries. You can find many types of standard enclosures to meet your needs:

  • Walk-in: Building enclosure for large electrical equipment, motors, and electronics
  • Mounted: Enclosure with mounting hardware for poles, towers, or walls
  • Ground- or floor-mount: Built with welded legs for bolting
  • Free-standing: Designed for installation onto concrete pads with anchor bolts
  • Pedestal: Elevated enclosure with metal base
  • Console: Enclosure designed for operator consoles and control equipment

Some options have single doors, multiple doors, locks, clasps, and other access control features.

Stainless Steel, Aluminum, and CRS

Metal enclosures offer enhanced durability in outdoor and industrial environments. We work with several types of metal:

  • Stainless steel: Optimal for chemical corrosion resistance but with a higher price tag
  • Aluminum: Naturally resistant to saltwater corrosion and an excellent conductor of heat, but with lower tensile strength and impact resistance
  • Cold-rolled steel: Strong, long-lasting, and relatively inexpensive, but requires a protective layer to prevent oxidation

Our team is happy to help you find the right type of electrical enclosure and material for your specific application.

NEMA 3 Compared to NEMA 3R Enclosure Rating

NEMA 3R ventilated enclosures are very similar to NEMA 3 enclosures, but 3R enclosures can be ventilated. Ventilated enclosures often use louvered openings. This is necessary for a vented battery enclosure. Venting does reduce the protection provided by NEMA 3R enclosures against windblown dust, but this can be offset through the use of screens or air filters.

Custom NEMA 3R Enclosure Accessories

Customize a steel, stainless steel, or aluminum NEMA 3R enclosure that delivers significant cost savings while meeting and exceeding industry standards for quality and durability.

Not sure which NEMA 3R enclosure to choose? Request a quoteto talk with our experts right away. 

Custom Nema 3R Enclosure Features & Configurations:

16" x 16" x 10"
BBA-1 Solar Battery Enclosure

  • Can hold one group 27 battery.
  • Fabricated from .090 5052 Aluminum
  • Manufactured to NEMA 3R Specifications
  • 13" x 13" Back Panel
  • Stainless Steel Hinge and Hardware
  • Stainless Steel Padlock Hasp
  • Closed Cell Neoprene Gasket
  • Screened / Louvered Air Vent
  • Pole Mounted Enclosure
  • 16" x 16" x 10" NEMA 3R Enclosure
BBA-1 Solar Battery Enclosure Drawing

18" x 18" x 18"
BBA-2 Solar Battery Enclosure

  • Holds two group 27 batteries.
  • Fabricated from .125 5052 Aluminum
  • Manufactured to NEMA 3R Specifications
  • 15" x 15" Back Panel
  • Stainless Steel Hinge and Hardware
  • Stainless Steel Padlock Hasp
  • Closed Cell Neoprene Gasket
  • Screened / Louvered Air Vent
  • Pole Mounted Enclosure
  • 18" x 18" x 18" NEMA 3R Enclosure
BBA-2 Solar Battery Enclosure Drawing

18" x 25" x 15"
BBA-3 Solar Battery Enclosure

  • Holds three group 27 batteries.
  • Fabricated from .125 5052 Aluminum
  • Manufactured to NEMA 3R Specifications
  • 15" x 22" Back Panel
  • Stainless Steel Hinge and Hardware
  • Stainless Steel Padlock Hasp
  • Closed Cell Neoprene Gasket
  • Screened / Louvered Air Vent
  • Pole Mounted Enclosure
  • 18" x 25" x 15" NEMA 3R Enclosure
BBA-3 Solar Battery Enclosure Drawing

16" x 48" x 24"
BBA-10 Solar Battery Enclosure

  • Holds ten group 27 batteries.
  • Fabricated from .125 5052 Aluminum
  • Manufactured to NEMA 3R Specifications
  • Stainless Steel Hinge and Hardware
  • Stainless Steel Padlock Hasp
  • Closed Cell Neoprene Gasket
  • Screened / Louvered Air Vent
  • Trunk style Enclosure
  • 16" x 48" x 24" NEMA 3R Enclosure
BBA-10 Solar Battery Enclosure Drawing

17" x 27" x 23"
4BS/2000 Solar Battery Enclosure

  • Holds four group 27 batteries.
  • Stainless Steel Hinge and Hardware
  • Stainless Steel Padlock Hasp
  • Closed Cell Neoprene Gasket
  • Screened / Louvered Air Vent
  • Trunk style Enclosure
  • 17" x 27" x 23" NEMA 3R Enclosure
4BS/2000 Solar Battery Enclosure Drawing

NEMA 3R Enclosures Finish Options

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