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NEMA/IP Number Definitions

NEMA-#

Description

1

General Purpose (Indoor)

2

Water Drip Proof (Indoor)

3R

Dust Tight, Rain Tight, and Ice Resistant (Outdoor)

4

Water Tight and Dust Tight (Indoor/Outdoor)

4X

Water Tight, Dust Tight, and Corrosion Resistant (Indoor/Outdoor)

9

Indoor Hazardous Locations (Not Applicable to III Equipment)

12

Industrial Use - Dust Tight and Drip Tight (Indoor)

13

Oil Tight and Dust Tight (Indoor)

Example

NEMA-4 is water tight and dust tight indoor and outdoor

 

 

IP##

 

First Digit - Airborne Contaminants

Description

0

No Special Protection

1

Protected Against Solid Objects > 50 mm in Diameter

2

Protected Against Solid Objects > 12 mm in Diameter

3

Protected Against Solid Objects > 2.5 mm in Diameter

4

Protected Against Solid Objects > 1 mm in Diameter

5

Dust Protected

6

Dust Tight

Second DigitWater/Moisture

Description

0

No Special Protection

1

Protected Against Dripping Water

2

Protected Against Dripping Water When Tilted Up to 15° C From Normal Position

3

Protected Against Spraying Water

4

Protected Against Splashing Water

5

Protected Against Water Jet Spray

6

Protected Against Heavy Jet Spray

7

Protected Against the Effects of Immersion

8

Protected Against Submersion

Example

IP54 is dust protected, and protected against splashing water.



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