Industrial NEMA Indoor/Outdoor

Great Lakes Industrial products are manufactured and tested onsite to meet multiple NEMA, IP and UL standards that adhere to specific customer requirements.

Since inception, Great Lakes has designed and manufactured enclosures for industrial control panels used in a number of industries, including HVAC, oil and gas, water, and alternative energy—just to name a few. We have created a full-scale, on-site lab where enclosures are tested for compliance with UL508A and NEMA 250 standards which has allowed us to expand our capabilities for production of industrial enclosures to meet growing customer demands.

The manufacturing and testing process for all of our products takes place in a single facility, which has allowed us to refine our core competencies and to support all Great Lakes customers. These products include unique configurations which are not met by off-the-shelf products or specific custom industrial enclosures other manufacturers will not make.

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NEMA Enclosure Types

Comparison of Specific Applications of Enclosures for Indoor Nonhazardous (non-classified) Locations
Provides a Degree of Protections Against the Following Conditions 1*  2*  4X  6P  12  12K   13
 Access to hazardous parts  X X X X X X X X X X
 Ingress of solid foreign objects (falling dirt)  X X X X X X X X X X
 Ingress of water (Dripping and light splashing)     X X X X X X X X X
 Ingress of solid foreign objects (Circulating dust, lint, fibers, and flyings **)      X X   X X X X X
Ingress of solid foreign objects (Settling airborne dust, lint, fibers, and flyings **)      X X X X X X X X
Ingress of water (Hosedown and splashing water)      X X   X X      
Oil and coolant seepage                X X X
Oil or coolant spraying and splashing                    X
Corrosive agents        X     X      
Ingress of water (Occasional temporary submersion)            X X      
Ingress of water (Occasional prolonged submersion)              X      

* These enclosures may be ventilated.
** These fibers and flyings are nonhazardous materials and are not considered Class III type ignitable fibers or combustible flyings. Class III type ignitable fibers or combustible flyings see the National Electrical Code, Article 500.
Table 2-1, NEMA Standards Publication 250-2008

Comparison of Specific Applications of Enclosures for Indoor & Outdoor Nonhazardous (non-classified) Locations
Provides a Degree of Protections Against the Following Conditions  3 3X 3R* 3RX* 3S 3SX 4 4X 6 6P
 Access to hazardous parts  X X X X X X X X X X
 Ingress of solid foreign objects (falling dirt)  X X X X X X X X X X
 Ingress of water (Dripping and light splashing)  X X X X X X X X X X
 Ingress of water (Rain, snow, and sleet **) X X X X X X X X X X
 Sleet **         X X        
 Ingress of solid foreign objects (Windblown dust, lint, fibers, and flyings)  X X     X X X X X X
 Ingress of water (Hosedown and splashing water)              X X X X
 Corrosive agents    X   X   X   X   X
 Ingress of water (Occasional temporary submersion)                  X X
 Ingress of water (Occasional prolonged submersion)                    X

* These enclosures may be ventilated.
** These fibers and flyings are nonhazardous materials and are not considered Class III type ignitable fibers or combustible flyings.
For Class III type ignitable fibers or combustible flyings see the National Electrical Code, Article 500.
Table 2-1, NEMA Standards Publication 250-2008