NEMA 3 Enclosure

At Bison Profab, we engineer and manufacture high-quality NEMA 3 electrical enclosures for power generation, telecommunications, manufacturing, construction, and many other industries. Choose from a wide range of standard weather-resistant NEMA 3 enclosure options or create a customized layout for your location and application specifications.

NEMA 3 electrical enclosures are weather-resistant and provide significant protection from dirt, wind-blown dust particles, water, rain, sleet, and snow. A NEMA 3-rated enclosure also stands up to exterior ice formation.

When you need a general-purpose weather-resistant enclosure for outdoor applications, NEMA 3 solutions are ideal. Many pole-mounted and tower-mounted enclosures in cold climates are NEMA 3 enclosures. The versatile indoor-outdoor nature of NEMA 3-rated enclosures makes them perfect for large construction projects where heating and protection from the elements aren’t always available.

NEMA 3 enclosures are also suitable for indoor locations where cold temperatures, accidental moisture, rain, or snow may cause issues. Examples include industrial loading docks, automotive repair garages, aircraft hangars, off-site sheds and warehouses, cold storage facilities, and unmanned industrial buildings.

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Weather protection is vital for outdoor electrical equipment and telecommunications equipment. High-quality NEMA 3 enclosures keep water, excess moisture, and dirt out. This helps to prevent:

• Short circuts
• Electrocution hazards to personnel
• Electrical fires from incorrect electrical flow
• Catastrophic damage to electrical or electronic systems
• System malfunctions and operational downtime

Additionally, the tightly sealed nature of NEMA 3 enclosures can also prevent the ingress of large pests that could otherwise damage transmission wires or electronics. Durable enclosures are a good investment to keep industrial operations going smoothly and avoid the high costs of power failures.

Some companies sell NEMA 3 products made of ABS plastic, but we recommend avoiding this material. UV rays can make plastics brittle and vulnerable to cracking. Metal enclosures offer long-lasting durability and greater protection against impacts and hail.

Stainless Steel

Stainless steel enclosures offer enhanced corrosion protection in some industrial environments, making them a good choice for oil & gas, petrochemical, and food and beverage applications.

Aluminum

Aluminum has an advantage over SS in coastal or off-shore locations due to its natural rust resistance. Aluminum enclosures are popular for alternative energy generation facilities (e.g. hydroelectric, wind, and geothermal).

Cold-Rolled Steel

CRS enclosures offer greater tensile strength at a lower cost. However, outdoor CRS enclosures require protective coatings, such as galvanization, powder-coating, or paint finishes, to prevent corrosion.

NEMA 3 enclosures are rated for windblown dust, offering superior protection in sandy or dusty environments. Choose a NEMA 3R enclosure when thermal venting and water drainage are more important.

At Bison Profab, we have an excellent reputation for quality and customization features. Request a quote today to find the ideal NEMA 3 enclosure for your application.