IP21 vs. IP22

Attribute	IP21	IP22
Environmental Protection	IP21 offers protection against solid objects larger than 12.5mm	IP22 offers protection against solid objects larger than 12.5mm and water spray up to 15 degrees from vertical
Usage	IP21 is suitable for indoor use	IP22 is suitable for indoor use
Applications	IP21 is commonly used in homes and offices	IP22 is commonly used in bathrooms and kitchens

Introduction

When it comes to choosing the right level of protection for electrical equipment, understanding the differences between various Ingress Protection (IP) ratings is crucial. In this article, we will compare the attributes of IP21 and IP22 ratings, focusing on their differences in terms of protection against solid objects and liquids.

IP21 Overview

IP21 is a rating that provides protection against solid objects larger than 12.5mm in diameter. This means that it offers limited protection against fingers or similar objects. However, IP21 does not provide any protection against the ingress of water. It is important to note that IP21 is primarily designed for indoor use where there is no risk of exposure to water or other liquids.

IP22 Overview

On the other hand, IP22 offers slightly better protection compared to IP21. It provides protection against solid objects larger than 12.5mm in diameter, similar to IP21. However, IP22 also offers protection against vertically dripping water when the equipment is tilted at an angle up to 15 degrees from its normal position. This makes IP22 suitable for use in areas where there is a risk of exposure to water, such as bathrooms or kitchens.

Comparison of Attributes

When comparing the attributes of IP21 and IP22, it is clear that IP22 offers better protection against water ingress. While both ratings provide the same level of protection against solid objects, IP22's ability to withstand vertically dripping water gives it an advantage in environments where moisture is a concern. This makes IP22 a more versatile option for applications that require protection against both solid objects and liquids.

Applications

IP21 is commonly used in indoor environments where there is no risk of exposure to water, such as offices, living rooms, or retail spaces. Its limited protection against solid objects makes it suitable for use in areas where there is minimal contact with fingers or similar objects. On the other hand, IP22 is ideal for use in areas where there is a risk of exposure to water, such as bathrooms, kitchens, or outdoor spaces where equipment may be exposed to rain or moisture.

Conclusion

In conclusion, the choice between IP21 and IP22 ultimately depends on the specific requirements of the application. While both ratings offer protection against solid objects larger than 12.5mm in diameter, IP22 provides an additional layer of protection against vertically dripping water. This makes IP22 a more versatile option for environments where moisture is a concern. By understanding the differences between these two ratings, users can make an informed decision when selecting the appropriate level of protection for their electrical equipment.