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NEMA Enclosure Ratings

Comparison of environmental rating standards for electrical enclosures

Here’s a side-by-side look at the environmental NEMA enclosure ratings between the National Electrical Manufacturers Association (NEMA) and Underwriters Laboratories, Inc. (UL) (cUL in Canada), CSA Group (CSA), for electrical enclosure types in Class I/Div II and non-hazardous locations.

NEMA provides guidelines for standard degrees of minimal protection. The organization does not test or verify the environmental integrity of any enclosure they rate. Purchasers should be cautious of any manufacturer claiming they provide NEMA rated enclosures without third-party testing.

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Enclosure Ratings

Comparison of environmental rating standards for electrical enclosures

UL is a global independent safety science company with more than a century of expertise in innovating safety solutions from the public adoption of electricity to new breakthroughs in sustainability, renewable energy, and nanotechnology. An enclosure manufacturer that provides the enclosure with a UL label insures the product has been tested and will meet the environmental rating. A typical UL inspection happens on a regular basis where the local inspector insures that the correct material has been used (via Material Test Report), material traceability, all measurement devices are calibrated and certified, the proper gasket is used, proper spacing on clamping device, the flange design, and gasket spacing are correct and finally, a serialized UL label is installed in the enclosure ensuring the final rating for the customer.
Nema Enclosure Ratings
Nema Enclosure Ratings
The National Electrical Manufacturer Association uses a standard rating system that defines the types of environments in which an electrical enclosure can be used, and frequently signifies a fixed enclosure's ability to withstand certain environment.
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IP Enclosures
IP Enclosures
An IP (Ingress Protection) rating is used mainly by buyers in Europe to specify the extent of protection an electrical enclosure has against environmental conditions.
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IECEX Enclosures
IECEX Enclosures
Used in indoor or outdoor applications where a potential explosive hazard exists, and third-party approval of the enclosure integrity and design is required.
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ATEX Enclosures
ATEX Enclosures
Used in indoor or outdoor applications where a potential explosive hazard exists, and third-party approval of the enclosure integrity and design is required.
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UL Listed Enclosures
UL Listed Enclosures
A privately owned and operated, independent third party product safety testing and certification organization with more than 1,000 standards for safety. These standards ensure safety and improves the quality of the enclosure.
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C-UL Enclosures
C-UL Enclosures
C-UL is an independent third-party safety and testing certification organization. These standards are essential to ensure the conformity of safety and improve the quality of the enclosures we produce.
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Product Name SKU Enclosure Material Enclosure Feature Nema Rating Height Width Depth Price Product Details
Wiring Trough Type 4 Hinged Cover with Clamps, 6 X 6 X 12 N060612CHTR Powder Coated Carbon Steel Continuous Hinge Clamp Style 3R, 4, 12 6 6 12
$336.29
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Floor Mount w/Leg Kit Single Door Type 4 w/Back Panel 72 X 42 X 24 N72HS4224WPLSQT Powder Coated Carbon Steel Concealed Hinge 1/4 Turn Latch 3R, 4, 12 72 42 24
$6,190.32
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Free Standing Single Door Type 4X w/ Back Panel 90 X 30 X 30 N90HS3030ALWPFS 5052 Aluminum Continuous Hinge Clamp Cover 3R, 3RX, 4, 4X, 12 90 30 30
$6,540.68
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Floor Mount w/Leg Kit Single Door Type 4 w/Back Panel 72 X 42 X 16 N72HS4216WPLSQT Powder Coated Carbon Steel Concealed Hinge 1/4 Turn Latch 3R, 4, 12 72 42 16
$6,083.82
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Free Standing Single Door Type 4X w/ Back Panel 90 X 36 X 20 N90HS3620ALWPFS 5052 Aluminum Continuous Hinge Clamp Cover 3R, 3RX, 4, 4X, 12 90 36 20
$6,374.57
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Floor Mount w/Leg Kit Single Door Type 4 w/Back Panel 72 X 42 X 12 N72HS4212WPLSQT Powder Coated Carbon Steel Concealed Hinge 1/4 Turn Latch 3R, 4, 12 72 42 12
$5,937.62
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Free Standing Single Door Type 4X w/ Back Panel 90 X 30 X 20 N90HS3020ALWPFS 5052 Aluminum Continuous Hinge Clamp Cover 3R, 3RX, 4, 4X, 12 90 30 20
$6,138.59
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Floor Mount w/Leg Kit Single Door Type 4 w/Back Panel 72 X 36 X 16 N72HS3616WPLSQT Powder Coated Carbon Steel Concealed Hinge 1/4 Turn Latch 3R, 4, 12 72 36 16
$5,777.54
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Free Standing Single Door Type 4X w/ Back Panel 90 X 24 X 20 N90HS2420ALWPFS 5052 Aluminum Continuous Hinge Clamp Cover 3R, 3RX, 4, 4X, 12 90 24 20
$5,835.85
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Floor Mount w/Leg Kit Single Door Type 4 w/Back Panel 72 X 36 X 12 N72HS3612WPLSQT Powder Coated Carbon Steel Concealed Hinge 1/4 Turn Latch 3R, 4, 12 72 36 12
$5,704.11
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Free Standing Single Door Type 4X w/ Back Panel 72 X 36 X 18 N72HS3618ALWPFS 5052 Aluminum Continuous Hinge Clamp Cover 3R, 3RX, 4, 4X, 12 72 36 18
$4,929.19
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Floor Mount w/Leg Kit Single Door Type 4 w/Back Panel 60 X 42 X 16 N60HS4216WPLSQT Powder Coated Carbon Steel Concealed Hinge 1/4 Turn Latch 3R, 4, 12 60 42 16
$5,261.57
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