When sourcing or exporting industrial equipment to Southeast Asia's demanding outdoor environments, understanding protection ratings is critical. IP65 is one of the most common protection standards for outdoor industrial equipment, but what does it actually mean, and when should you choose it over IP67 or IP68?
The IP (Ingress Protection) code is defined by the IEC 60529 international standard, published in 1976. The code consists of two digits: the first indicates protection against solid objects (dust), and the second indicates protection against liquids (water) [3]. For IP65, the '6' means completely dust-tight with no ingress of dust permitted, and the '5' means protected against low-pressure water jets from any direction.
This makes IP65 ideal for outdoor industrial equipment exposed to rain, light washdown, and dusty environments—but not for submersion or high-pressure cleaning. Common applications include outdoor electrical enclosures, solar system components, factory automation sensors, 5G small cells, and renewable energy combiner boxes [1].
IP65 protects from fire risk due to water seepage or dust damage. It is the recommended standard for outdoor industrial use where equipment faces rain and light spray but not immersion [4].

