2.23 Ambient temperature in °C 10 15 20 25 30 35 40 45 50 55 60 Conversion factor 1,15 1,1 1,06 1 0,94 0,89 0,82 0,75 0,67 0,58 0,47 Conversion factors for permissible current Degree of protection against dirt and touching (first digit) Protection against touching Protection against Dirt 0 No protection no protection 1 Protection against touching with back of the hand. The probe diameter is 50mm Protection against solid objects ≥ 50 mm 2 Finger Safe (test probe diameter ≥12,5mm and 80mm long) Protection against solid objects (diameter ≥12,5mm) 3 Protection against touching live parts with a tool/wire (diameter 2,5 mm) Protection against small solid parts (diameter ≥2,5 mm) 4 Protection against touching live parts with a wire (diameter 1 mm) Protection against small solid parts (diameter ≥1 mm) 5 Protection against touching with a wire like IP 4, but only small ingress of dust The ingress of dust is not totally prevented, but dust does not enter in sufficient quantity to interfere with satisfactory operation of the equipment or with safety. 6 Protection against touching with a wire like IP 4, dust-tight No entry of dust. Degree of protection against water (second digit) Protection against water 0 No protection 1 Protected against vertically dripping water 2 Protected against dripping water, when enclosure tilted up to 15° 3 Protected against sprayed water falling with up to 60° from the vertical 4 Protected against splashing water from any direction 5 Protected against water jets from any direction 6 Protected against powerful water jets 7 Protection against the effects of occasional submersion 8 Protection against the effects of permanent submersion If one of the figures not needs to be mentioned it will be replaced by an „X“ Additional information is available in DIN EN 60529 and IEC 529 IP Rating Pg 9 11 13,5 16 21 29 36 42 48 Orifice diam. mm 15,5 19 21 23 29 37,5 47,5 54,5 60 Outside diameter of lines and cables from - to mm 4,5-7 6-9 9-12 11-14 14-18 18-25 25-32 30-38 34-42 M.. x 1,5 mm 12 16 20 25 32 40 50 63 Outside diameter of lines and cables from - to mm 3-6,5 5-10 6-12 11-16 15-20 19-27 26-34 32-44 Line and cable entry points
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