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Catalogue 2014/2015

Technical information NEMA The National Electrical Manufacturers Association (NEMA) is a standards organisation in Washington, USA, which publishes a number of technical standards but does not test or certify products itself. The following NEMA classification outlines the protection of individuals from accidental contact with equipment and the protection of an enclosure from external factors. Further information on protection categories may be found on the Internet at: www.rittal.com UL/NEMA Type Intended use and description 1 Enclosures for use predominantly indoors Protection against the penetration of foreign bodies 3 Enclosures for use predominantly outdoors Protection from rain, hail, dust, icing and the damage caused by icing 3R Enclosures for use predominantly outdoors Protection from rain, hail, icing and the damage caused by icing 3S Enclosures for use predominantly outdoors Protection from rain, hail and dust External mechanisms remain usable despite being coated in ice 4 Enclosures for indoor or outdoor use Protection against rain, foreign bodies, splashed water and hosed water and against damage caused by icing on the exterior of the enclosure 4X Enclosures for indoor or outdoor use Protection against rain, foreign bodies, splashed water and hosed water and against damage caused by icing on the exterior of the enclosure Increased protection from corrosion 12, 12K Enclosures for use predominantly indoors Protection against dust deposits, foreign bodies and non-corrosive dripping liquids 13 Enclosures for use predominantly indoors Protection against dust deposits, sprayed water, oil, and non-corrosive coolants The UL/NEMA classifications are not directly comparable with IP protection categories, since both the test conditions and the evaluation of the test results are different Approvals and permits Product certifications and approvals are pivotal to the global acceptance of industrial products. Rittal products meet the highest internationally recognised quality yardsticks. All components are subjected to the most stringent testing in accordance with international standards and regulations. The consistently high product quality is ensured by a comprehensive quality management system. Regular production inspections by external test institutes also guarantee compliance with global standards. A precise allocation of products to marks of conformity can be found on our product and service pages on the Internet. www.rittal.com Earthing The PE conductor connection must be designed by the manufacturer of switchgear in accordance with the relevant VDE and/or local regulations. The enclosure packs generally contain earthing materials (screws, nuts, washers). The assembly instructions contain recommendations on installing a protective earth. The pre-assembled earth straps, available as accessories in various cross-sections and lengths, are intended to make assembly of a PE conductor easier. Further information can be found in our technical documentation “PE conductor connection, current carrying capacity”. 724 Rittal Catalogue 34/Technical Information

Catalogue 2014/2015
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