EN IEC 62262 Degrees of Protection Provided by Enclosures of Electrical Equipment Against External Mechanical Effects (IK Code)

The “EN IEC 62262 Degrees of protection of enclosures for electrical equipment against external mechanical impacts (IK code)” standard, developed by the International Electrotechnical Commission (IEC) and later published as a European standard as part of harmonization efforts, focuses on classifying the degrees of protection provided by enclosures against external mechanical impacts when the nominal voltage of the protected equipment does not exceed 72,5 kV. This standard is only applicable to equipment enclosures for which a specific standard defines the degree of protection of the enclosure against mechanical impacts.

The purpose of this standard is to:

• Definitions of the degrees of protection provided by electrical equipment enclosures in terms of protecting the equipment inside from the harmful effects of mechanical shocks.
• Names for protection levels.
• Requirements for each naming convention.
• Tests will be conducted to verify that the enclosure meets the requirements of this standard.

It is the responsibility of the relevant technical committees to decide to what extent and how the classification will be used in their own standards and how the enclosure will be applied to their own equipment. However, it is recommended that the tests for a particular classification do not differ from those specified in this standard. If necessary, supplementary requirements can be added to the relevant product standard.

For a specific type of equipment, the product committee may specify different requirements, provided that at least the same level of safety is ensured.

This standard relates only to enclosures that, as specified in the relevant product standard, are in all other respects suitable for their intended use and that, in terms of materials and workmanship, ensure the maintenance of the claimed degrees of protection under normal conditions of use.

The EN IEC 62262 standard is an international benchmark used to measure how well electrical enclosures, such as lighting fixtures, control panels, or security cameras, can withstand external mechanical impacts. While IP ratings (ingress protection) indicate resistance to dust and water, the IK rating defined by this standard indicates how much physical impact the device can withstand before breaking.

The “IK” in the rating stands for impact protection. This is followed by two digits from 00 to 10, measuring the impact energy in Joules (J).

The HR rating reference table is as follows:

• IK00: Impact energy 0 J. No protection.
• IK01: Impact energy 0,14 J. Very slight impact. Equivalent impact scenario: a 0,25 kg object dropped from a height of 5,6 cm.
• IK04: Impact energy 0,50 J. Equivalent impact scenario: A 0,25 kg object is dropped from a height of 20 cm.
• IK04: Impact energy 0,70 J. Moderate impact.
• IK07: Impact energy 2,00 J. Strong impacts. Equivalent impact scenario: a 0,50 kg object is dropped from a height of 40 cm.
• IK08: Impact energy 5,00 J. Severe impact. Equivalent impact scenario: a 1,70 kg object is dropped from a height of 30 cm.
• IK09: Impact energy 10,00 J. Equivalent impact scenario: A 5,00 kg object is dropped from a height of 20 cm.
• IK10: Impact energy 20,00 J. Extreme impact. Equivalent impact scenario: a 5,00 kg object dropped from a height of 40 cm.

For example, IK10 means the enclosure can withstand a 20 J impact. This is roughly equivalent to a 5 kg mass dropped from a height of 40 cm.

Standardized tests ensure that the “IK10” rating means the same thing regardless of the country where the product is manufactured.

According to the EN IEC 62262 standard, the following conditions must be met:

• Testing device: Impacts are applied using specialized tools such as pendulum hammers, spring hammers, or vertically falling hammers.
• Impact points: To ensure there are no soft spots, testing should be performed at least at 5 different points on the housing.
• Environmental controls: Tests are carried out under standard atmospheric conditions (temperatures between 15 and 35 degrees Celsius).
• Pass/fail criteria: To pass, the enclosure must retain basic safety and functionality. Minor cosmetic scratches are generally acceptable, but cracks that compromise internal electrical safety or the IP rating (allowing water/dust ingress) will result in failure.

Choosing the right HR degree is about striking a balance between cost and security:

• Public safety and vandalism: For street lighting, ATMs, or security cameras in public areas, values ​​between IK08 and IK10 are required to prevent intentional damage.
• Industrial environments: In factories where heavy machinery or forklifts are in motion, high HR ratings prevent accidental impacts from causing electrical fires or equipment failures.
• Compliance with standards: Many international safety regulations require specific HV ratings for equipment installed in hazardous or high-traffic areas.

While the EN IEC 62262 standard defines the classification (IK codes), the EN 60068-2-75 standard details the actual test procedures and technical specifications for hammers. Engineers often refer to both standards simultaneously when setting up laboratory testing.

In short, the EN IEC 62262 standard is an international standard that classifies the degree of protection provided by enclosures against external mechanical impacts. It defines how durable an appliance's outer casing is when subjected to physical shocks such as impacts, drops, or vandalism.

The main objectives of this standard are:

• To provide a uniform classification system for impact resistance.
• To enable comparison between products from different manufacturers.
• Ensuring the safety and durability of electrical enclosures in real-world conditions.

This is especially important in the environments to which the equipment is exposed:

• Public areas (risk of vandalism)
• Industrial use
• External weather conditions

EN IEC 62262 is widely applied in industries such as the following:

• Electrical distribution (switchgear, control panels)
• Lighting systems (street lights, industrial lighting fixtures)
• Telecommunications equipment
• Public infrastructure (ticket machines, kiosks, surveillance systems)

For example, outdoor lighting in dense urban areas typically requires IK08 to IK10 ratings for resistance to vandalism and accidental impacts.

The EN IEC 62262 standard is considered important for the following reasons:

• It improves product safety and reliability.
• It reduces maintenance and replacement costs.
• Ensures compliance with international regulations.
• It increases consumer confidence in product durability.

In conclusion, the EN IEC 62262 standard plays a crucial role in modern engineering by standardizing how mechanical impact resistance is measured and transmitted.

For many years, our organization, with its competent and experienced staff, has been understanding the needs of its clients, providing the advanced testing services they require, and assisting them in the establishment, implementation, and improvement of management systems. Within this framework, we also provide testing services compliant with the EN IEC 62262 standard.