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Meaning of IP protection rating: IP XX The first digit indicates the level of protection against solid objects: 0. No protection 1. Protection against objects larger than 50 mm (e.g., palms) 2. Protection against objects larger than 12 mm (e.g., fingers) 3. Protection against objects larger than 2.5 mm (e.g., tools, wires) 4. Protection against objects larger than 1.0 mm (e.g., wires, thin rods) 5. Protection against dust that could cause damage. The second digit indicates the level of protection against water intrusion: 0. No protection; 1. Protected against dripping water; 2. Protected against drops falling at an angle of less than 15°; 3. Protected against sprayed water at an angle of <60°; 4. Protected against splashing water from all directions; 5. Protected against water jets from all directions; 6. Protected against water floods or high-pressure water jets; 7. Protected when submerged in water up to a depth of 150 mm–1 m; 8. Protected when completely submerged, suitable for continuous submersion in water. (For example, IP65 means complete protection against dust as well as protection against water jets from all directions.) The meaning of the NEMA protection rating: NEMA protection ratings (IP ratings) classification. NEMA is an organization formed by American manufacturers, tasked with establishing standardized technical specifications for electrical equipment. The standards and testing methods established by NEMA are applied as the basic guidelines for UL (Underwriters Laboratories) to determine and certify electrical enclosures. The numbers in parentheses indicate the corresponding IP rating. NEMA 1 is for indoor use and provides protection against devices that come into contact with it as well as a certain amount of dust falling on it (IP30). Grade 2 is also for indoor use, offering protection against falling dust and water (IP31). Grade 3 is designed for outdoor use; it protects against dust carried by wind, rain, and snow, and even ice formation on the device’s casing does not cause damage to the equipment (IP64). Grade 3R is also for outdoor use, providing protection against rain and snow; ice formation on the casing still does not cause damage (IP32). Grade 3S is intended for outdoor use, offering protection against dust carried by wind, rain, and snow, and it can continue to function properly even when ice forms on the casing. Grade 4 is suitable for both indoor and outdoor use, providing protection against splashing water, dust carried by wind, and water coming directly from pipes; ice formation on the casing does not cause damage (IP66). Grade 4X is also suitable for indoor and outdoor use, offering the same level of protection as Grade 4, plus corrosion resistance (IP66). Grade 6 ensures that the device will not be damaged if submerged in water at a limited depth for a short period of time; ice formation on the casing also does not cause harm. Grade 6P ensures that the device will not be damaged if submerged in water at a limited depth for an extended period of time. Grade 11 provides protection against oil spills in indoor environments; the equipment also has resistance to corrosion caused by corrosive liquids and gases. Grades 12 and 12K are for indoor use, offering protection against dust, falling soil, and non-corrosive liquids that may drip onto the equipment (IP65). Grade 13 is for indoor use, providing protection against dust, as well as mist from water, oil, and non-corrosive coolants (IP65)