What is an IP rating?
The IP (Ingress Protection) code defined in IEC 60529 classifies the degree of protection provided by enclosures against solid objects and water. It replaces vague marketing terms such as “waterproof” with clear, tested levels.
First digit – solids
- 0 – no protection
- 1 – objects > 50 mm
- 2 – objects > 12.5 mm (fingers)
- 3 – objects > 2.5 mm (tools)
- 4 – objects > 1 mm (wires)
- 5 – dust protected
- 6 – dust tight
Second digit – water
- 0 – no protection
- 1/2 – dripping water
- 3 – spraying water
- 4 – splashing water
- 5 – water jets
- 6 – powerful water jets
- 7 – temporary immersion up to 1 m
- 8 – continuous immersion beyond 1 m (per manufacturer)
An “X” replaces a digit that has not been tested. Typical industrial choices: IP54 indoors, IP65/IP66 outdoors and wash-down areas, IP67/IP68 for submersible equipment.
