NEMA 3R ENCLOSURES


Stainless steel NEMA 3R floor mount enclosure by NEMACO

Stainless Steel NEMA 3R Floor Mount Enclosure

Nemaco offers NEMA 3R electrical enclosures with a full range of cabinet configurations including wall mount, floor mount, free standing, pole mount and custom configurations. Our NEMA 3R rated enclosure series can be used for both indoor and outdoor environments. The enclosures are designed to provide protection against rain, snow, ice, falling dirt, windblown dust/dirt. Nemaco offers NEMA 3R cabinets in the following materials:

  • Powder Coated Steel
  • Aluminum (mill finish)
  • Powder Coated Aluminum
  • Stainless Steel (mill finish)

Nemaco offers NEMA 3R Enclosures made from premium grades of carbon steel with oven baked & durable powder coated finishes. In order to better serve customers, Nemaco offers material upgrades to include mill (non-coated) aluminum, powder coated aluminum and to (304 / 316L) stainless steel that provides durability and more corrosion resistance.

DUST & RAIN RESISTANCE

According the standard NEMA rating system, the NEMA 3R enclosures do not need to be dust resistant. And therefore some manufacturers don’t include gaskets in the enclosures. But of course, gaskets would provide better water seal resistance from downward and dripping water from side winds in a heavy storm. In order to better serve customers, Nemaco often puts gaskets in many NEMA 3R enclosures design for better water seal resistance. Note that NEMA 3 rating does require dust resistance and by default the enclosures should have better water resistance. Call Nemaco for your NEMA 3 and 3R enclosures applications

STANDARD NEMA 3R TESTING

Here are the typical testing standards for Type 3R enclosures, For general reference, let’s discuss the most common downward rain test procedure that is used for industrial standards.

NEMA 3R enclosures need to be tested to provide protection from a downward water spray from nozzles with 5 psi for 1hr. After one hour rain test, the enclosures must have limited water inside and any excess water must drain from the enclosure.

COMMON MATERIALS and COATINGS

We offer NEMA 3R Enclosures made from premium grades of carbon steel with oven baked & durable powder coated finishes. Powder coated handle and quarter turn knobs are available many cabinets. But customers can request upgraded hardware packages to chrome or stainless hardware (including JIC latches, hasps, and hinges).

In order to better serve customers, Nemaco offers material upgrades to include mill (non-coated) aluminum, powder coated aluminum and to (304 / 316L) stainless steel that provides durability and more corrosion resistance. 

For customers working on unique and special projects, send an email to us to learn about new design solutions. Call us if you have any questions about materials or assistance with applications. 

Nemaco NEMA 3R enclosure with 19 inch racks opened front view

NEMA 3R ENCLOSURE HARDWARE

In order to better serve customers, Nemaco offers the following hardware options:

  • Powder coated handle
  • Quarter turn knobs
  • Upgraded hardware chrome or stainless
  • JIC screw latches, hasps, and hinges

Call us if you have any questions about materials or assistance with applications.

Our Designs of TYPE 3R DEFINITION PER NEMA 250 STANDARD

Wall Mount Enclosures

Floor Mount Enclosures

Mobile Wheels Enclosures (1 Door)

Mobile Wheels Enclosure (2 Doors)

Double Bay (Doors) Enclosures

Climate Control Enclosures (1 Door)

Climate Control Enclosures (2 Door)

TYPE 3R ENCLOSURES - SUMMARY

We offer NEMA 3R electrical enclosures with a full range of cabinet configurations including wall mount, floor mount, free standing, mobile wheels and custom configurations. The NEMA 3r cabinets can be used for both indoor or outdoor environmentsThe boxes are designed to provide protection against rain, snow, ice, falling dirtwindblown dust/dirt and dripping from leaking pipes for indoor or outdoor locations. These enclosures are typically powder coated steel and therefore provide limited corrosion resistance. For customers needing more corrosion resistant then they should consider requesting aluminum or (304/316L) stainless steel instead. 

  • Powder Coated Carbon Steel (HR / CRS) – Strong & Durable  
  • Powder Coated Aluminum (5052, 6061) – Low Weight   
  • Stainless Steel (Material Grades 304/316) – Strong, Durable, Corrosion Resistant  

Call Nemaco for powder-coated steel, powder-coated carbon steel, aluminum, and chemically passivated stainless steel enclosure solutions.

Follow links below for more different types of NEMA enclosure from us that give different protection degree
https://www.nemaco.com/enclosure-ratings/nema-ratings/

FeaturesDetails
Minimum/Maximum Height24"/72"
Minimum/Maximum Width24"/24"
Minimum/Maximum Dept24"/42"
Size Range
depend on Enclosure type
• 24" x 24" x 24"
            TO
• 72" x 24" x 42"
Air condition• 1000 BTU NE010126-04 (30 lbs)
                          TO
• 6000 BTU NE060126-04 (121 lbs)
19" Server rack railAvailable call us for detail
Powder coating colors• White
• Light Gray
• Dark Gray
• Black
Footings• 8” footing
• 12” footing
Material• Carbon steel
• Aluminum
• Stainless Steel
Insulation• 1/2” thickness
• 3/4” thickness
Handle• Key locked handle
• Pad locked Handle
Interior Panel - Options• Aluminum(non coated)
• White Powder Coated Steel
• 304 Stainless (2B Finish)
Interior Panel - Size Range• 21" X 21"
       TO
• 69" X 21"
** To calculate maximum interior panel size for your cabinet
panel size = cabinet size - 3"
Custom options• ROXTEC™ seal solutions
• NPT fittings
• GND studs
• Lexan Window
• Sun Shield
• Coupling
• Thru Hole