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Solid particle protection

The first digit indicates the level of protection that the enclosure provides against access to hazardous parts (e.g., electrical conductors, moving parts) and the ingress of solid foreign objects

1. Solid Ingress Protection

LevelObject size protected againstEffective against
0No protection against contact and ingress of objects
1>50 mmAny large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part
2>12.5 mmFingers or similar objects
3>2.5 mmTools, thick wires, etc.
4>1 mmMost wires, screws, etc.
5Dust protectedIngress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment.
6Dust tightNo ingress of dust; complete protection against contact (dust tight)

 

2. Liquid ingress protection

The second digit indicates the level of protection that the enclosure provides against harmful ingress of water

LevelProtected againstEffective againstDetails
0Not protected
1Dripping waterDripping water (vertically falling drops) shall have no harmful effect.Test duration: 10 minutes
Water equivalent to 1 mm rainfall per minute
2Dripping water when tilted up to 15°Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15° from its normal position.Test duration: 10 minutes
Water equivalent to 3 mm rainfall per minute
3Spraying waterWater falling as a spray at any angle up to 60° from the vertical shall have no harmful effect.Test duration: 5 minutes
Water volume: 0.7 litres per minute
Pressure: 80–100 kPa
4Splashing of waterWater splashing against the enclosure from any direction shall have no harmful effect.Test duration: 5 minutes
Water volume: 10 litres per minute
Pressure: 80–100 kPa
5Water jetsWater projected by a nozzle (6.3 mm) against enclosure from any direction shall have no harmful effects.Test duration: at least 3 minutes
Water volume: 12.5 litres per minute
Pressure: 30 kPa at distance of 3 m
6Powerful water jetsWater projected in powerful jets (12.5 mm nozzle) against the enclosure from any direction shall have no harmful effects.Test duration: at least 3 minutes
Water volume: 100 litres per minute
Pressure: 100 kPa at distance of 3 m
6KPowerful water jets with increased pressureWater projected in powerful jets (6.3 mm nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects.Test duration: at least 3 minutes
Water volume: 75 litres per minute
Pressure: 1000 kPa at distance of 3 m
7Immersion up to 1 mIngress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 m of submersion).Test duration: 30 minutes
Tested with the lowest point of the enclosure 1000 mm below the surface of the water, or the highest point 150 mm below the surface, whichever is deeper.
8Immersion beyond 1 mThe equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. However, with certain types of equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects.Test duration: continuous immersion in water
Depth specified by manufacturer, generally up to 3 m
9KPowerful high temperature water jetsProtected against close-range high pressure, high temperature spray downs.Test duration: –
Water volume: 14–16 litres per minute
Pressure: [8000–10000 kPa / 80–100 Bar] at distance of 0.1–0.15 cm
Water temperature: 80 °C

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