What is the difference between IP65 and IP56?

In the field of electrical and electronic engineering, IP ratings are commonly used to indicate the level of protection provided by a device against solids and liquids. Among the most frequently encountered IP ratings are IP65 and IP56. While these codes may seem obscure to the average consumer, they play a crucial role in determining the suitability of a device for various environments.

Understanding IP Ratings

The International Protection (IP) code is defined by the International Electrotechnical Commission (IEC) as a standard measure for classifying the degree of protection provided by an enclosure. The IP code consists of two digits, each representing a specific level of protection. The first digit indicates the level of protection against solid foreign objects and dust, whereas the second digit indicates the level of protection against water ingress.

Decoding IP65

A device with an IP65 rating offers a high level of protection against both solids and liquids. The first digit, "6", signifies complete protection against dust and other solid particles. This implies that the device is entirely dust-tight and prevents any foreign objects from entering. The second digit, "5", indicates protection against low-pressure water jets projected from all directions. In other words, the device is protected against water spray from a nozzle with a 6.3mm diameter orifice under specific pressure conditions.

Demystifying IP56

An IP56 rating, on the other hand, provides slightly lower protection compared to IP65. The first digit, "5", denotes limited protection against dust and other solid particles. Although the device is not entirely dust-tight like an IP65-rated device, it still prevents most dust from entering. The second digit, "6", signifies protection against strong jets of water or heavy seas. This means that the device can withstand powerful water jets from a 12.5mm nozzle, as well as strong waves or temporary immersion.

In summary, IP65 and IP56 are both capable of safeguarding electrical and electronic devices in different environments. While IP65 offers a higher level of protection against solids and low-pressure water jets, IP56 provides good dust resistance and can withstand strong water jets and temporary immersion. Understanding these IP ratings is crucial for selecting the right device that meets the required standards for specific applications.