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IP Ratings Leave a comment

IP (Ingress Protection) ratings are defined by IEC60529 published by the International Electrotechnical Commission. They are expressed by the letters “IP” followed by two digits, as follows:

1st DIGIT
Protection from solid objects or materials
2nd DIGIT
Protection from liquids
0No protection0No protection
1Protected against solid objects over 50mm
e.g. accidental touch by hands
1Protection against vertically falling drops of water
2Protected against solid objects over 12mm
e.g. fingers
2Protection against direct sprays of water
up to 15° from the vertical
3Protected against solid objects over 2.5mm
e.g. tools, wire
3Protection against direct sprays of water
up to 65° from the vertical
4Protected against solid objects over 1mm
e.g. small tools, thin wire
4Protection against water sprayed from all directions.
Limited ingress permitted
5Protected against dust, allowing limited ingress
(but there must be no harmful deposit)
5Protection against low pressure jets of water from all directions.
Limited ingress permitted
6Totally protected against dust6Protection against powerful jets of water from all directions.
Limited ingress permitted
7Protection against the effect of immersion up to 1m
for short periods
8Protection against long periods of immersion under pressure

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