The IK rating on a charger spec sheet grades impact protection: how hard a knock the enclosure can take without damage, tested under the international IK code. It is written as “IK” plus two digits, the scale runs upward from IK00 (no protection), and a higher number means the casing survives harder impacts. It sits next to the better-known IP rating — IP covers dust and water getting in; IK covers the box itself being hit.
Key Takeaways
- IK grades how much impact a charger’s enclosure can withstand; IP grades sealing against dust and water.
- Higher IK numbers mean a tougher casing, tested under the international IK code.
- Impact protection matters most in public, workplace and street-side sites.
- The rating covers the enclosure only — not the cable, connector or vandalism.
IK and IP: Two Different Kinds of Tough
| Code | What it grades | How it is shown | What it does not cover |
|---|---|---|---|
| IP rating | Sealing against dust and water | IP plus two digits, e.g. IP54, IP66 | Knocks, drops and vandalism |
| IK rating | Impact resistance of the enclosure | IK plus two digits, higher is tougher | Rain, dust, and damage to the cable or connector |
Spec sheets often lead with the IP number because weather is the everyday threat, which is why drivers know IP66 but rarely IK. The two are tested separately and a charger can be strong in one and ordinary in the other. When you compare units for a hard-used site, look for both codes, and treat a missing IK figure as a question to ask the maker rather than a number to assume. Deciding whether a separate EV charger enclosure is needed is a related judgement for exposed locations.
Where Impact Protection Actually Matters
- Public and workplace car parks. Chargers share space with reversing cars, shopping trolleys and delivery traffic. A cracked enclosure is not cosmetic — it can let water reach live parts.
- Street-side and shared parking. Units are within reach of everyone, including people with no reason to be careful around them.
- Busy home garages. Bikes, bins and car doors at close quarters. The risk is lower than a public site, but it is the same kind of knock.
- Sheltered indoor sites. The quiet end of the scale, where sealing and electrical protection matter more than impact strength.
Note what the rating does not do. IK grades the enclosure only: the connector, its latch and the cable are wear items with their own lifespans, and no IK number makes a unit vandal-proof — site layout, lighting and physical protection around the charger are separate decisions. The rating tells you how the box itself stands up to the impacts of normal hard use.
Reading IK Ratings When You Specify or Buy
Start from the location, not the number. An indoor home wallbox rarely meets anything harder than a bicycle handlebar; a charger on a supermarket car park post should be specified as if it will be clipped by a bumper, because eventually it may be. Installers working to recognised practice, such as the IET Code of Practice for EV charging equipment installation, will ask where the unit lives before recommending a model.
EVDANCE publishes the IP rating of each model — for example the EV-AC03201T dual-connector AC station is IP54 with two Type 2 connectors and OCPP 1.6J for shared sites, and the EV-RHDC30K-L compact DC fast charger is IP54 at 22 kW. For impact data on a specific project, ask for the model’s test documentation rather than relying on the headline codes; see EVDANCE commercial charging for site equipment. Where a charger will be installed, site selection matters as much as the casing.
Frequently Asked Questions
Is IK08 good enough for a public charger?
There is no single mandated answer — it depends on the site’s exposure. Treat the IK figure as one input alongside position, physical protection and traffic, and ask the manufacturer or installer to justify the grade for your location rather than chasing the highest number.
Does a high IK rating make a charger waterproof?
No. Water and dust sealing is the IP rating’s job. A charger needs the right grade in both codes for an exposed site.
Do home chargers need an IK rating?
It is worth checking rather than requiring. A garage wallbox in a quiet corner faces little impact risk; one beside a narrow driveway entrance faces more. If a home model does not publish an IK figure, the IP rating, listing and warranty carry the decision.
Related Reading
- Do You Need an EV Charger Enclosure? How to Choose an Outdoor Enclosure
- Are Portable EV Chargers Waterproof? IP Ratings Explained for Drivers
- Where to Install an EV Charging Station: Site Selection Guide
- Should EV Chargers Have Surge Protection?
