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Catalogue 2014/2015

Technical information Protection categories to IEC 60 529 (EN 60 529) The IP protection category is characterised by 2 numbers. Example of a protection category, e.g. IP 43: Code letters IP First numeral Second numeral Degrees of protection for protection against contact and foreign bodies: First numeral Degrees of protection for protection against water: Second numeral First numeral Degree of protection Second numeral Degree of protection Description Explanation Description Explanation Protected against solid foreign objects with a diameter of 50 mm and greater The object probe, a sphere 50 mm Protected against water in diameter, must not penetrate fully1). drops Vertically falling water drops must not cause any harmful effects. Protected against solid foreign objects with a diameter of 12.5 mm and greater The object probe, a sphere 12.5 mm in diameter, must not penetrate fully1). The articulated test finger may penetrate up to its length of 80 mm, but adequate distance from hazardous parts must be adhered to. Protected against vertically falling water drops when the enclosure is tilted up to 15° Vertically falling drops must not have any harmful effects when the enclosure is tilted up to 15° on either side of the vertical. Protected against solid foreign objects with a diameter of 2.5 mm and greater The object probe, a sphere 2.5 mm in diameter, must not penetrate at all1). Protected against sprayed water Water sprayed at an angle of up to 60° on either side of the vertical shall have no harmful effects. Protected against solid foreign objects with a diameter of 1.0 mm and greater The object probe, a sphere 1.0 mm in diameter, must not penetrate at all1). Protected against splashed water Water splashed on the enclosure from any direction shall have no harmful effects. Dust-proof The ingress of dust is not fully prevented, but dust may not enter to such an extent as to impair satisfactory operation of the device or safety. Protected against water jets Water directed at the enclosure from any direction in a jet shall have no harmful effects. Dust-tight No ingress of dust at a partial vacuum of 20 mbar inside the enclosure. Protected against powerful water jets Water directed at the enclosure from any direction in a powerful jet shall have no harmful effects. Protected against temporary immersion in water Water must not ingress to such an extent as to cause harmful effects when the enclosure is temporarily immersed in water under standardised pressure and time conditions. Protected against continuous immersion in water Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is continuously immersed in water under conditions to be agreed between the manufacturer and the user. However, the conditions must be more difficult than for numeral 7. Water with high-pressure/ steam-jet cleaning Water directed at the enclosure from every direction under greatly increased pressure must not have any adverse effects. 1) The full diameter of the object probe must not pass through an opening of the enclosure Rittal Catalogue 34/Technical Information 723

Catalogue 2014/2015
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