Define the water exposure first
The choice between NEMA 3R and NEMA 4 depends on the actual exposure, including rain, hose-directed water, washdown, drainage, dust, corrosion, mounting, and maintenance. Use the product construction and project specification to confirm the applicable designation.
Selection inputs
| Input | Why it matters |
|---|---|
| Rain and outdoor weather | Supports 3R-type weather planning |
| Hose or washdown exposure | May require a different enclosure objective |
| Dust and contaminants | Affects seals, doors, and maintenance |
| Material and corrosion | Determines lifecycle suitability |
| Cable entry and cooling | Prevents weak points and overheating |
Scope boundary
This comparison does not transfer a NEMA rating or certify an installation without configuration-specific evidence.
EN_GB 
EN 
EN_ZA 
AR 
DE 
ES 
FR 
IT 
JA 
ZH 
TR 
RU 
EN_CA 
EN_AU 
NL 
PT 
FA