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IP Ratings |
Table 1 - IP rating 1st digit
IP Rating
(1st digit) |
Meaning for protection
of Equipment Against
Solid Objects |
Tested by |
Meaning for Protection
of Persons (Protected
Against Access to
Hazardous Parts) |
| 0 |
No protection |
None |
No protection |
| 1 |
Solid objects 50 mm |
50mm dia. sphere applied
with 50N force. |
Accidental touch by back of hand |
| 2 |
Solid objects 12.5 mm |
12.5 mm dia. sphere applied
with 30N force. |
Accidental touch by fingers |
| 3 |
Solid objects 2.5 mm |
2.5 mm dia. steel rod
applied with 3N force. |
Accidental touch by tool |
| 4 |
Solid objects 1 mm |
1 mm dia. steel wire applied
with 1N force |
Accidental touch by small wire |
| 5 |
Dust-protected (limited
ingress, no harmful
deposit) |
Dust chamber with or without
under-pressure |
Accidental touch by small wire |
| 6 |
Dust-tight (totally
protected against dust) |
Dust chamber with
under-pressure |
Accidental touch by small wire |
Table 2 - IP Rating 2nd digit
IP Rating
(2nd digit) |
Protection against water with harmful effects |
Tested by |
Meaning for Protection
from water |
| 0 |
No protection |
None |
No protection |
| 1 |
Vertically Dripping |
Drip box for
10 min |
Falling drops of water, condesation |
| 2 |
Dripping 15º from the vertical |
Drip box 2.5 min per side. |
Direct light streams of water up to 15º from the vertical |
| 3 |
Spraying |
Oscillating Tube ±60º, 10 min, 10 I/min |
Direct light streams of water, upto 60º from the vertical |
| 4 |
Splashing |
Oscillating Tube ±180º, 10 min, 10 I/min |
Water sprayed from all directions, limited ingress |
| 5 |
Jetting |
6.3 mm dia. nozzle from 2.5 to 3 Meters distance,12.5 I/min for 3 min |
Low pressure water jets from all directions, limited ingress |
| 6 |
Powerful Jetting |
6.3 mm dia. nozzle from 2.5 to 3 Meters distance,100 I/min for 3 min |
Strong jets of water, limited ingress |
| 7 |
Temporary Immersion |
Immersed in tank with water 0.15 m below top and 1 m above bottom for 30 min. |
Protected against the effects of temporary immersion in water |
| 8 |
Continuous Immersion |
water level and time |
Protected against the effects of continuous immersion in water |
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