Table
Panel Enclosure NEMA/CSA Type Ratings
Panel Enclosure NEMA/CSA Type Ratings lookup table with assumptions and boundary notes.
Scope
Enclosure-type planning only. It does not approve a panel location, installation, corrosion exposure, washdown exposure, or hazardous location use.
Lookup table
Compare common enclosure type markings by environmental protection meaning and typical planning use.
Scroll sideways to keep row labels aligned with hidden columns.
| Enclosure type | Common location use | Protection summary | Boundary |
|---|---|---|---|
| Type 1 | Indoor general-purpose | Incidental contact and limited indoor dust protection | Not an outdoor or wet-location enclosure lookup |
| Type 3R | Outdoor rain and sleet lookup | Weather-resistant outdoor enclosure with limited falling-rain protection | Not a washdown or corrosion-resistance substitute |
| Type 4 | Indoor or outdoor washdown lookup | Protection against splashing water, hose-directed water, and windblown dust | Corrosion exposure depends on material and marking |
| Type 4X | Indoor or outdoor corrosion-lookup applications | Type 4-style water protection plus additional corrosion resistance | Material, gasket, hardware, and environment still need product review |
| Type 12 | Indoor industrial lookup | Dust, falling dirt, and dripping non-corrosive liquid protection | Not an outdoor rain or washdown enclosure lookup |
Notes
- Check table values for preliminary lookup and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.