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.

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.

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.

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.

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 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.

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.