IP ratings and IK ratings are standardized protection classifications used to specify how well EV charging equipment withstands environmental exposure and physical impact. In charging infrastructure, they are key indicators of durability, safety, and expected uptime in real-world installations.
IP ratings (Ingress Protection)
An IP rating (Ingress Protection rating) defines how well an enclosure prevents intrusion from solid objects (dust) and water. The format is IP followed by two digits (or “X” if not tested).
– First digit: protection against solids and access to hazardous parts (e.g., dust, tools, fingers)
– Second digit: protection against water ingress (dripping, spray, jets, immersion)
Common examples in EV charging:
– IP54 – protected against limited dust ingress and water splashes
– IP65 – dust protected/dust-tight level (depending on first digit) with protection against water jets (commonly specified for outdoor equipment)
– IP67 – dust-tight and protected against temporary immersion (often referenced for components/connectors)
Practical notes for charging sites:
– IP rating applies to the enclosure as tested—real performance depends on correct installation (cable glands, base sealing, drainage).
– Different parts of a charger (connector area, base, UI) may behave like different ingress protection zones in real conditions.
IK ratings (Impact protection)
An IK rating defines how well an enclosure resists mechanical impact (vandalism, accidental hits) based on standardized impact energy levels. It is defined by IEC 62262 / EN 62262.
IK codes typically run from IK00 to IK10, with each level mapped to a defined impact energy (joules).
– IK10 corresponds to 20 joules (high vandal resistance for public environments).
Why it matters in EV charging:
– Helps protect housings, doors, and user interfaces in public car parks and curbside installs
– Reduces downtime from cracked covers, broken screens, and damaged access panels
– Often paired with physical protections like bollards where vehicle strike risk exists
IP vs IK
These ratings cover different risks and are not interchangeable:
– IP = dust + water ingress resistance
– IK = impact resistance (mechanical shock)
Related Glossary Terms
Ingress Protection (IP Rating)
Ingress Protection Zones
IK Rating
IK10 Impact Protection
Weatherproof Enclosure
Bollard Protection
Ground Mounting
Water Ingress
Corrosion Resistance
Uptime