Dustproof markings for distribution boxes
IP ratings consist of two digits after the letters "IP", each with a specific meaning. The IEC has developed the ingress protection (IP) ratings, which grade the resistance of an enclosure against the intrusion of dust or liquids Electric and electronic equipment deteriorate or malfunction when water or dust enters the device. It defines a specific level of defense against dust and water, based on the international standard IEC 60529. IP rating, or "International Protection Marking", is used to describe the protection of equipment against solid objects and liquids.
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