Waterproof Power Supply

What is the difference between a waterproof power supply and a rainproof power supply? Many people are confused about the waterproof grade of waterproof and rainproof. From the word “waterproof”, we can find out that it can protect the power supply from water, and “rainproof” from rain. “IP” is the abbreviation of Ingress Protection. IP and other protection-level systems provide a method for classifying products based on the degree of dustproof, waterproof, and anti-collision of electrical equipment and packaging. The protection level is mostly expressed by IP followed by two numbers, and the number is used to clarify the protection level. The first number indicates the range of the equipment’s resistance to fine dust or the degree to which the people are protected from harm in a sealed environment.

waterproof power supply 

The highest level is 6; the second safety word indicates the degree of waterproofness of the device. P represents the level of preventing water ingress, the highest level is 8. IP protection level classification requirements: IPXX dustproof and waterproof grade dustproof level 

The first X indicates 

0: no protection

1: prevent large solid intrusion 2: prevent medium solid intrusion

3: prevent small solid intrusion

4: prevent Solids with objects larger than 1mm from entering

5: prevent harmful dust accumulation

6: completely prevent dust from entering the waterproof level 

The second X indicates 

0: no protection

1: no effect of water droplets dripping into the casing

2: when the casing is inclined to 15 degrees, Water drops dripping into the shell have no effect

3: Water or rain from a 60-degree corner has no effect on the shell

4: Liquid splashed into the shell from any direction has no harmful effect

5: Rinse with water without any damage

6: Can be used in the environment of the cabin

7: Can withstand water immersion in a short time (1m) 8: immerse in water for a long time under a certain pressure. Therefore, we usually call IP65 as rainproof for outdoor rain and call IP67 IP68 as waterproof, which needs to put inside the earth or water.

Outdoor Waterproof Power Supply 

Visit SMPSPOWER’s Power Products Centre.


We have over 20 product experts with over 12 years of experience designing and assembling countless waterproof power supplies. We can be your sturdy backbone.

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