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NEMA 3 Enclosure

NEMA 3 Enclosure

Detailed Specifications

Parameter

Specification

Product Series

NEMA 3 Enclosure / Weatherproof General Electrical Box

Environment

Indoor and outdoor use (excellent weather resistance)

Dimensions

Multiple standard sizes (custom L/W/D and cutouts supported)

Material

Aluminum, stainless steel, cold-rolled carbon steel, etc.

Protection Rating

NEMA 3 (protection against dust, rain, water, and external ice formation)

Key Features

High-seal dustproof/waterproof design, non-vented enclosure, secure locks, and internal mounting plate

Process

Laser Cutting

Laser Cutting

Dedicated nitrogen cutting ensures zero oxidation layer on every workpiece.

CNC Bending

CNC Bending

Advanced equipment guarantees precision at every step.

Automated Welding

Automated Welding

Standardized welding robots deliver 10x manual efficiency with higher, more stable quality.

Surface Finishing

Surface Finishing

Options include as-machined, coating, surface treatment, heat treatment, and custom finishes.

Custom Logo

Custom Logo

Customer-supplied logos can be printed directly on product surfaces.

Learn More

F.A.Q

01

What information is needed to customize and inspect a NEMA enclosure?

Provide: installation location, temperature range, dust type, water source/pressure, oil/coolant details, corrosive media, submersion depth/duration, dimensions, internal equipment, cutouts, cable entry, and material/finish specifications.

02

Are NEMA enclosures explosion-proof, corrosion-resistant, or completely waterproof?

No. NEMA ratings define protection against specific environmental factors, but do not automatically imply explosion-proof certification, universal chemical compatibility, total waterproofing, continuous submersion, or high-pressure washdown capability.

03

How to choose between NEMA 4 and NEMA 6?

NEMA 4 handles rain, windblown dust, splashing, and hose-directed water. NEMA 6 adds protection against temporary submersion at specified depths. The key factor is whether water may rise above the enclosure base or door frame for extended periods.

04

What is the difference between NEMA 4 and NEMA 4X?

NEMA 4 protects against windblown dust, rain, snow, splashing, and hose-directed water. NEMA 4X adds corrosion resistance, ideal for coastal, humid, chemical, wastewater, food processing, or washdown environments.

05

How to distinguish between NEMA 3, NEMA 3R, and NEMA 4?

Both NEMA 3 and 3R suit outdoor rain, sleet, snow, and external icing. NEMA 3 additionally protects against windblown dust, whereas NEMA 3R focuses on rain, snow, and ice without windblown dust protection.

06

What are the differences between NEMA 1, NEMA 5, and NEMA 13?

NEMA 1 suits general indoor use, focusing on personnel safety and basic dust protection. NEMA 5 targets indoor dust, dirt, and non-corrosive dripping liquids. NEMA 13 protects against oil, coolant, mist, and splashing near machine tools and industrial machinery.

07

Can NEMA types and IP ratings be directly converted?

No direct 1:1 conversion exists. NEMA covers solid/water ingress plus windblown dust, oil, coolant, external icing, corrosion, and limited submersion. IP ratings classify only solid object and water ingress.

08

How to select the right NEMA enclosure for your site?

First identify five key factors: installation location, primary contaminants, water sources, corrosive agents, and potential submersion risks.

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