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NEMA Ratings for Sheet Metal Enclosures |
Comparison of Specific Applications of Enclosures
| Indoor Enclosures Nonhazardous Locations |
| Provides a Degree of Protection Against the Following Conditions |
Type of Enclosure |
| 1* |
2* |
4 |
4X |
5 |
6 |
6P |
12 |
12K |
13 |
Access to hazardous parts |
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Ingress of solid foreign objects (falling dirt) |
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Ingress of water (Dripping and light splashing) |
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Ingress of solid foreign objects (Circulating dust, lint, fibers, and flyings**) |
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Ingress of solid foreign objects (Settling airborne dust, lint, fibers, and flyings **) |
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Ingress of water (Hosedown and splashing water) |
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Oil and coolant seepage |
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Oil or coolant spraying and splashing |
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Corrosive agents |
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Ingress of water (Occasional temporary submersion) |
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Ingress of water (Occasional prolonged submersion) |
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* 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.
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| Indoor Enclosures Nonhazardous Locations |
| Provides a Degree of Protection Against the Following Conditions |
Type Of Enclosure |
| 3 |
3X |
3R* |
3RX* |
3S |
3SX |
4 |
4X |
6 |
6P |
Access to hazardous parts |
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Ingress of water (Rain, snow, and sleet **) |
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Sleet *** |
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Ingress of solid foreign objects (Windblown dust, lint, fibers, and flyings) |
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Ingress of water (Hosedown) |
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Corrosive agents |
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Ingress of water (Occasional temporary submersion) |
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Ingress of water (Occasional prolonged submersion) |
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* These enclosures may be ventilated.
** External operating mechanisms are not required to be operable when the enclosure is ice covered.
*** External operating mechanisms are operable when the enclosure is ice covered. |
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For more information about Sparton enclosures, email your requirements to our sales staff. To expedite our quoting process, please download and print out our custom NEMA enclosure RFQ form, then complete the form and fax it to us at (603) 883-3400. If we are able to have the form in hand before your call, we can ask you fewer questions and filling out the form will force you to think about many more aspects of your design.
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©2008 Sparton Technology Company - Hudson, NH
Phone: (603) 880-3692 Fax: (603) 883-3400 |
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