What are the differences between IPX3 and IPX4 waterproof level tests?

The International Electrotechnical Commission (IEC) has defined the IPX3 and IPX4 waterproof level tests in order to evaluate the level of protection provided against water ingress in electronic and electrical products. These tests can be found on the International Electrotechnical Commission website.

The strength and length of the water spray used in the IPX3 vs the IPX4 waterproof level testing is the primary factor that differentiates the two.

The IPX3 waterproof test requires that the product be sprayed with water from a variety of angles for a period of at least five minutes. At a minimum distance of three meters, the spray need to be directed onto the product while it is being held. The purpose of the IPX3 test is to guarantee that the product can survive being sprayed with water while also preventing any water from entering the device's internal workings.


The IPX4 waterproof test, on the other hand, entails subjecting the item to a more rigorous and prolonged water spray. The item should be able to endure water splashes coming from any and all directions for at least five minutes without being damaged. The purpose of the IPX4 test is to guarantee that the product can survive water splashes in an environment that is considered to be more demanding.

To summarize, the IPX3 waterproof test is meant to assess the amount of protection against water jets, and the IPX4 waterproof test is designed to evaluate the level of protection against water splashes. Both tests are designed to be carried out in order. The primary difference between the two tests is found in the magnitude and length of exposure to the water spray.

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