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41 7.6 Degrees of Protection according to NEMA Standards

Table 23: Degreeof Protection provided by Enclosuresaccording toNEMA (Publication No.250 Enclosures for Electrical Equipment 1000Volts Maximum) DigitDegree of ProtectionUseType 1Protection against incidental contact with the enclosed equipment.IndoorType 2Protection against limited amounts of falling water and dirt.Indoor Type 3Protection against rain, sleet, windblown dust, and damage from external ice formationOutdoor Type 3RProtection against rain, sleet, and damage from external ice formation.Outdoor Type 3SProtection against rain, sleet, windblown dust, and for operation of external mechanisms when ice laden.Outdoor Type 4Protection against, rain, splashing water, hose directed water, and damage from external ice formation.Indoor or outdoorType 4XProtection against, rain, splashing water, hose directed water, and damage from external ice formation. Indoor or outdoorProtection against corrosion.Type 5Protection against settling airborne dust, falling dirt, and dripping non-corrosive liquids.Indoor Type 6Protection against hose directed water, penetration of water during occasional temporary submersion at a Indoor or outdoorlimited depth, and damage from external ice formation.Type 6PProtection against hose directed water, penetration of water during prolonged submersion at a limited depth, Indoor or outdoorand damage from external ice formation.Type 7For use in locations classified as Class I, Groups A, B, C or D as defined in the NEC.IndoorType 8For use in locations classified as Class I, Groups A, B, C or D as defined in the NEC.Indoor or outdoor Type 9For use in locations classified as Class II, Groups E, F or G as defined in the NEC.Indoor Type 10Constructed to meet the applicable requirements of the Mine Safety Health Administration.Mining Type 11Protection against the corrosive effects of liquids and gases by oil immersion.Indoor Type 12, 12KProtection against circulating dust, falling dirt, and dripping non-corrosive liquids.Indoor Type 13Protection against dust, splashing water, oil, and non-corrosive liquids.Indoor R.STAHL explosion protection