This comprehensive 2026 guide explains the most important ratings — IP44, IP54, IP55, IP65, IP66, IPX4, IPX5, and IPX7 — with in-depth comparisons, testing methods, real-world case studies, and actionable selection advice. IP rating, or “International Protection Marking”, is used to describe the protection of equipment against solid objects and liquids. – **Second number**:. 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. Built with durable materials, CE & ROHS certified. Via these enclosures, you're able to protect the most sensitive electrical components from eco-hazards, such as humidity, water jets, and dust, which your. SMICO's IP65 protection rating is one of the common protection rating standards for outdoor plastic distribution boxes. This grade of distribution box is highly waterproof and. IP ratings (IEC 60529) define protection levels against dust and water — IP54, IP55, IP65, and IP66 are the most searched and applied ratings for outdoor and industrial products. IPX4 protects against splashing water, IPX5 handles water jets, while IPX7 allows temporary immersion up to 1 meter for.