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What is the protection rating? In Italy, the so-called protection rating refers to a classification based on the different degrees of protection against the penetration of dust and moisture. The protection rating for pumps that we commonly see is usually denoted by codes such as IP55 or IP68; this rating system is based on IEC60529 or GB/T4208. What does IP mean? IP is the abbreviation for INGRESS PROTECTION, and it denotes the two capabilities of mechanical and electrical products regarding dust and water resistance. The traditional IP rating consists of two digits. The format is IP__ __ . The first digit indicates the dust protection rating, which shows the level of protection against the entry of solid particles; it ranges from 0 to 6, resulting in 7 different ratings. Pumps with a lower protection rating are usually ordinary household products, possibly IP44, as the environment in which they are designed and installed does not present significant risks, or the characteristics of these pumps make it unsuitable to achieve a higher level of protection. Conventional commercial dry-mounted water pumps typically have an IP54 or IP55 rating, which is mainly determined by the type of motor. In the image, the second number indicates the water resistance rating, which reflects the level of waterproofing; it ranges from 0 to 8, resulting in 9 different levels. IEC60529 had its standard updated in 2013, and GB/T4208 was also updated in 2017. Following these updates, the waterproof rating scale changed from 0-8 to 0-9, meaning there are now 10 different waterproof rating levels. The newly added level 9 indicates protection against high-temperature and high-pressure water jets. The difference between image IP and IPX: IPX is an internationally recognized standard for rating water resistance, and it is used to indicate the level of water resistance of various instruments and devices; it is one of the most common technical specifications. The standards for testing the waterproof rating of each IP grade are different. We often see rating labels such as IPX8. This marking indicates that no specification has been given for the dust protection level; the lack of such a specification does not mean that there is no dust protection capability.