This type of information is useful to architects, engineers, installers, inspectors and other interested parties. The National Electrical Manufacturers Association ( NEMA ) defines standards used in North America for various grades of electrical enclosures typically used in industrial applications. Each is rated to protect against personal access to hazardous parts, and additional type-dependent designated environmental conditions.
If unsure of the enclosure rating that is required of your project, please refer to the design chart below. The chart will assist in specifying which enclosure rating is appropriate for the .
NEMA 3S, 3SX – NEMA 3S and NEMA 3SX enclosures benefit from the same protection as a .
All too often, enclosures are specified with the wrong NEMA rating, which can mean wasted money if the chosen rating is too high, or premature failure and the .
Same protection as Type 3R but adds protection against windblown dust. The overlapping two-door models with no center post allow full-width access to enclosure interior. Conforms to NEMA standard for Type 1. Notes: We can provide special sizes, finishes and other modifications.
Consult the factory for your special requirements. Millimeters shown are for reference only. Data subject to change without notice.
Both NEMA and UL recognise Type 3R , a variation of Type and again, the standards cover the same specifications (with the usual wording differences and need for independent verification). This style of enclosure provides protection against falling rain, sleet, snow, . NEMA 3R enclosures are typically used in outdoor applications for wiring and junction boxes. These types are usable in an outdoor setting, and . NEMA Type Popular, General- purpose.
Click here for more information on our latest Seismic rated enclosure . Enclosure Rating, Popularity, Definition. However, these enclosures will remain operable when covered in ice. Nema offers stainless steel enclosures in both 3and 3stainless steel.
Type 3stainless steel is an austenitic chromium-nickel stainless and heat- resisting steel with superior corrosion resistance as compared to other chromium- nickel steels. It means that the enclosure is going to have louvers to prevent falling water or snow from getting inside. Must exclude at least GPM of water from 1-in.
Custom electrical enclosures , custom NEMA enclosures , stainless enclosures , bussed weatherheads, cable tap boxes and aluminum fabrication services.
Separate enclosures can be used with open style devices for field assembly of enclosed controls. UL 508A Liste Type 3R , Type Type 4X, Type 12. Protects against windblown dust and rain, splashing water and hose directed water.
This guide will outline the enclosure types for non-hazardous locations, as well as their applications and degree of protection offered. For more information, refer to NEMA Standard .
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