How does EN 60529 define IP ratings?
IP stands for Ingress Protection and refers to the level of protection provided by an enclosure of electrical equipment against the intrusion of solid objects (such as dust) and liquids (such as water) that could potentially damage internal electrical or mechanical components. The IP rating is defined by the European Standard EN 60529 and is widely recognized across industries.
Why EN 60529 and IP rating matter
Electric and electronic equipment deteriorate or malfunction when water or dust enters the device. Compliance with EN 60529 is essential for ensuring product reliability, safety, and suitability for specific environments.
EN 60529 was originally developed as an international standard by the International Electrotechnical Commission (IEC) and first published as IEC 60529 in 1976. Later, in 1991, it was adopted in Europe as EN 60529, aligning it with European standardisation frameworks. Since then, it has been periodically reviewed and updated to reflect technological developments and industry needs, but the core IP rating system introduced in the original 1976 version remains the foundation.
The IP rating provides a consistent and transparent framework for manufacturers, engineers, and end users to evaluate how well a product is protected in different environmental conditions. It allows manufacturers to classify enclosures in an objective way rather than using vague marketing terms such as dust tight, water resistant, or waterproof. And it helps customers to make an easier comparison between different products and quickly understand the durability and resilience of a product.
How is the IP code structured?
The IP code is composed of two digits:
The first digit indicates the protection against solid objects and is rated on a scale from 0 (no protection) to 6 (no ingress of dust).
The second digit indicates the protection against liquids and is rated on a scale from 0 (no protection) to 9 (high-pressure hot water from different angles).
When an X is used, it signifies that no testing has been carried out. So, when an IP rating is written as IP2X, it indicates level 2 protection against solid objects, while no testing has been performed for liquid ingress protection.
1) Protection from solids
The scale used for solids or foreign objects being able to enter an enclosure. Ratings 1–4 protects from object intrusion while 5–6 provide protection from dust particles. Solid protection is cumulative. It also describes the protection for a person from being able to access the hazardous parts housed inside an electrical enclosure i.e. protecting a person from touching an enclosure with the back of a hand or from putting a finger through a louvre or a vent.
X Unknown
0 No protection
1 Protection against large objects of >50 mm (e.g. a hand)
2 Protection against objects of >12.5 mm (e.g. a finger)
3 Protection against objects of >2.5 mm (e.g. a screwdriver)
4 Protection against small objects of >1 mm (e.g. a wire)
5 Protection against dust; limited ingress of dust permitted that will not interfere with the operation of equipment
6 Protection against all ingress of dust (dust tight)
2) Protection from liquids
The scale of protection from water or moisture establishes different types of ingress of water, varying from splashes of water, to higher pressure jets of water (1–6) to protection from a prolonged immersion of water (7–8).
X Unknown
0 No protection
1 Protection against dripping water (vertically falling drops of water)
2 Protection against dripping water when enclosure tilted up to 15° from vertical
3 Protection against spraying water up to 60° from vertical
4 Protection against splashing water from all directions
5 Protection against low-pressure water jets from all directions
6 Protection against powerful water jets and waves from all directions
7 Protected against temporary immersion up to 1 m for a maximum of 30 minutes
8 Protected against prolonged immersion, under pressure
9 Protected against powerful high-temperature water jets
Common IP ratings of Sentera products
Selecting the appropriate IP rating depends on the intended use environment. Indoor, low-risk environments may only require basic protection (e.g. IP20), while outdoor or harsh industrial environments require higher ratings (e.g. IP65).
Sentera products are available in enclosures with different IP ratings, depending on the model range and required specifications. For detailed information on available variants, please refer to the individual product datasheets. Below is an overview of common IP ratings applicable to Sentera products.
- IP20 enclosures protect against accidental contact from hands/fingers, but provide no protection against the ingress of dust, water or other liquids. These devices are designed to be installed in an electrical cabinet with sufficient ventilation and cooling possibilities.
- IP30 enclosures protect against contact with hands/fingers and smaller objects (e.g. a screwdriver), but provide no protection against the ingress of dust, water or other liquids. These devices are designed for indoor applications.
- IP54 enclosures provide protection against the ingress of dust, sufficient to prevent any harmful accumulation that could affect the operation of the device. The enclosure also withstands water splashing from different directions, but no water jets. These devices are designed for more demanding applications.
- IP65 enclosures are completely dust-tight and protected against exposure to water jets from any direction. These devices are designed for outdoor applications.
- IP67 enclosures are completely dust-tight and protected against temporary immersion in water. These devices are designed for harsh outdoor applications, and are especially useful in industrial or agricultural settings.
In conclusion, understanding EN 60529 ensures that products are properly specified for their operating conditions, reducing the risk of failure and extending service life.