Waterproof, outdoor, IP65, IP67, and explosion-proof are mixed together on product titles. They answer different questions. Use the code that has a test behind it, and keep hazardous-area marking in its own column.
How to read an IP code
IEC 60529 defines the two digits. The first is protection against solid objects and dust: 5 is dust-protected, 6 is dust-tight. The second is water: 4 is splashing, 5 is jets, 6 is powerful jets, 7 is a stated temporary immersion, 8 is continuous immersion under conditions the manufacturer must publish. IP65 is the common “dust-tight and sprayed” enclosure. IP67 is the common “can survive a short dunk” enclosure. Neither one rates corrosion, sunlight, or a gasket after five years of UV. Those need materials and a maintenance note.
Enclosures are a bill of materials
A DIN-rail box, a junction box, and a floor-standing cabinet do not become outdoor equipment because the paint is grey. Specify the material, the gasket, the cable glands (a missing gland cancels the IP code), and whether the door hardware is inside the tested design. Cutting a hole for an HMI changes the rating unless that exact assembly was tested or assessed. Polycarbonate and painted steel fail in different climates. Say which climate you have.
Explosive atmospheres are a separate certificate
ATEX is the European legal scheme for equipment in potentially explosive atmospheres. IECEx is a parallel international certification scheme. Both talk about zones, gas or dust groups, and a temperature class so the surface does not ignite the atmosphere. A waterproof enclosure can still have a hot surface or an arc. If the installation is in a hazardous area, the specification is the certificate and the marking string, matched to the site classification your safety engineer owns. Tradinor is not that assessment.
The same habit — reading the mark instead of decorating the title — applies to RoHS, CE, and ISO claims.
Questions buyers actually ask
Does IP67 mean the product can sit underwater?
IP67 means the enclosure passed a defined temporary-immersion test. It is not a rating for continuous underwater use, and it says nothing about UV, chemicals, or impact. IP68 is the code that requires the manufacturer to state a deeper or longer immersion. Read that stated condition.
Is IP65 better than IP67?
They are different water tests. IP65 is water jets. IP67 is temporary immersion. A product can be designed for one and not the other. Higher second digit is not a casual upgrade; specify the test that matches the real exposure.
If a box is IP66 and metal, is it explosion-proof?
No. Explosive-atmosphere equipment is certified under schemes such as ATEX in the EU or IECEx more widely, for a zone, a gas or dust group, and a temperature class. u201cExplosion proofu201d as a loose adjective is not a certificate. If the area is hazardous, ask for the certificate number and match it to the zone.