Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment. Dust tight No ingress of dust; complete protection against contact. Second Digit: Liquid Ingress Protection Protected Against No protection No protection against water. Dripping water Vertically falling drops (e.g., condensation). Dripping water (15° tilt)
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You're looking for the IEC 60529 standard, which deals with the classification of degrees of protection provided by enclosures for electrical equipment against solid particles and water. Ingress of dust is not entirely prevented, but
Before we hunt for the PDF, let’s establish the value of the standard itself. Dripping water Vertically falling drops (e
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