The Comprehensive Guide to NEMA Ratings Part 3

Type 3X: These enclosures are designed to be used for both indoor and outdoor applications. It gives protection for personnel against accidental contact to sensitive or hazardous parts of the equipment. It also gives protection for the equipment against solid or water ingress. It also gives additional level of protection that is brought by external ice formation on the enclosure. It also gives level of protection from corrosion because of the material used for this type of rating. 

Type 3RX: these enclosures are designed for both indoor and outdoor applications. It is built to give protection for personnel using the equipment from accidental contact to sensitive or hazardous parts of the equipment. It also gives protection to solid and water ingress caused by foreign objects, dust, falling dirt, rain and water drippings. It gives protection from damage caused by external ice formation and it gives protection against corrosion formation. 

Type 3SX: These enclosures are built for both indoor and outdoor applications and it gives good level of protection for personnel using the equipment from accidental access to hazardous parts. It gives level of protection for the equipment protected inside the enclosure from solid or water ingress. It gives protection for possible external ice formation and it also protects equipment from possible corrosion formation. The external mechanisms on this type of enclosure rating remains operational when ice laden. 

Type 4: These enclosures are built for both indoor and outdoor applications and it gives good level of protection for personnel using the equipment from accidental access to hazardous parts. It gives level of protection for the equipment protected inside the enclosure from solid or water ingress. It gives protection for possible external ice formation and it also protects equipment from possible corrosion formation. This type of enclosure is ideal and best recommended for outdoor applications. 

Type 4X: These enclosures are built for both indoor and outdoor applications and it gives good level of protection for personnel using the equipment from accidental access to hazardous parts. It gives level of protection for the equipment protected inside the enclosure from solid or water ingress. It gives protection for possible external ice formation and it also protects equipment from possible corrosion formation. This type of enclosure is ideal and best recommended for outdoor applications. It gives additional level of protection against corrosion formation. In comparison to type 4 NEMA rated enclosure, the NEMA 4X are more durable and it gives a higher level of protection against corrosion. 

Type 5: these enclosures are built for indoor use and it gives level of protection for personnel using the equipment. This prevents the personnel from having access to hazardous parts and it gives protection for the equipment housed inside the enclosure from solid and water ingress. This can be caused by falling dirt, settling airborn dust, lint, fibers, and flyings. Water ingress are also commonly caused by light water dripping and light splashing. 

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