| TYPE |
USE |
DESCRIPTION |
| 1 |
Indoor |
Minimal protection |
| 12 |
Indoor |
Dust, dirt, dripping liquid tight |
| 4 |
Outdoor |
Windblown dirt, dust, rain; splashing and hose directed water |
| 4X |
Outdoor |
NEMA 4 plus corrosion resistance |
Note: All categories are not listed here. These four categories cover most NEMA rated enclosures in actual use. They are listed in order of increasing protection.