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NEMA 3R Enclosure

NEMA 3R Enclosure

Detailed Specifications

Parameter

Specification

Product Series

NEMA 3R Enclosure / Weatherproof Electrical Box

Environment

Indoor and outdoor use; resistant to rain, sleet, and snow

Dimensions

Standard sizes available (e.g., 45x75x35 or 200x400x100 mm; custom sizes and cutouts supported)

Material

High-grade cold-rolled steel, carbon steel, aluminum, or corrosion-resistant 304/316 stainless steel

Finish

Standard industrial powder coating, anti-corrosion and rust treatment

Core Features

Drainage/weep holes, waterproof gaskets (optional), heavy-duty security locks

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 details are required for custom NEMA enclosures and acceptance?

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

02

Does a NEMA enclosure mean explosion-proof, corrosion-proof, or fully waterproof?

No. NEMA ratings specify protection against defined environmental conditions. They do not automatically imply explosion-proof certification, universal chemical compatibility, total waterproofing, continuous submersion, or high-pressure washdown resistance.

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 limited depths. Choose based on whether water levels may submerge the enclosure base or door frame for a period.

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, and washdown environments.

05

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

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

06

What is the difference between NEMA 1, NEMA 5, and NEMA 13?

NEMA 1 is for general indoor use, protecting personnel and shielding against basic falling dirt. NEMA 5 targets indoor dust, dirt, and dripping non-corrosive liquids. NEMA 13 is designed for machine tool environments with oils, coolants, oil mist, and splashing.

07

Can NEMA types be directly converted to IP ratings?

No direct 1:1 conversion exists. NEMA types cover solid ingress and water, plus windblown dust, oils, coolants, external icing, corrosion resistance, and limited submersion. IP ratings focus primarily on ingress of solids and water.

08

How to choose the right NEMA enclosure based on site conditions?

Confirm five factors first: mounting location, primary contaminants, water sources, presence of corrosive media, and potential submersion.

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