Cut Sheet

V8-T12-40 Volume 8—Sensing Solutions CA08100010E—November 2012 www.eaton.com
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12.1
Sensor Learning Course
Learning Module 23: Limit Switches, Proximity Sensors and Photoelectric Sensors
IEC Ratings
IEC Environmental Enclosure Ratings
Examples of Designations
An enclosure with this designation is protected against
the penetration of solid objects greater than 1.0 mm and
against splashing water.
An enclosure with this designation is protected against
the penetration of solid objects greater than 1.2 mm and
against rain.
Index of Enclosure Ratings—IEC
1
st
Characteristic Numeral
2
nd
Characteristic Numeral
2
nd
Characteristic Numeral
See table below
IP 4 4
1
st
Characteristic Numeral
See table below
2
nd
Characteristic Numeral
See table below
IP 2 3
1
st
Characteristic Numeral
See table below
Numeral Description
Protection against contact and the penetration of solid bodies
0 Not protected
1 Protection against solid objects greater than 50 mm.
2 Protection against solid objects greater than 12 mm.
3 Protection against solid objects greater than 2.5 mm.
4 Protection against solid objects greater than 1.0 mm.
5 Dust protected
6 Dust-tight
Numeral Description
0 Not protected
1 Protection against dripping water
2 Protection against dripping water when tilted up 15 degrees
3 Protection against rain
4 Protection against splashing water
5 Protection against water jets
6 Protection against heavy seas
7 Protection against the effects of immersion
8 Protection against immersion