Enclosure Ratings Knowledge Base Topic

Guardian Telecom Enclosure Types

Designed and manufactured to the highest standards, Guardian Telecom equipment for use in either Explosion Proof or Hazardous Area applications is housed in enclosures rated for those areas.

Depending on the country, governing body, jurisdiction and regulations, there are a number of standards that are used to define the type and applicability of enclosures.

• NEMA National Electrical Manufacturers Association Enclosures Types
• IP Ingress Protection Code Designations
• Approximate Conversion of NEMA Enclosure Types to IP Designations

NEMA Enclosures

Developed by National Electrical Manufacturers Association, NEMA enclosure protection designations have been adopted by UL, CSA and other North American conformance bodies.

In Non-Hazardous Locations, specific enclosure types, their applications, and the environmental conditions they are designed to protect against, when completely and properly installed, are as follows:

Figure 7. Guardian Telecom NEMA Enclosure Types

Guardian Telecom designs, manufactures and distributes telephone products that have been tested by CSA/UL to the following NEMA standards:

Type 3R
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, and snow; and that will be undamaged by the external formation of ice on the enclosure.

Type 4
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure.

Type 4X
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, hose-directed water, and corrosion; and that will be undamaged by the external formation of ice on the enclosure.

For more information on NEMA standards visit: www.nema.org – NEMA Standards Publication 250

The content in this section presents general information describing the classification systems that Guardian Telecom designs, manufactures and markets telephone and paging system products to, including ATEX, NEC, CEC and IEC.
All information is for general reference purposes only. All applicable local and national regulations and practices concerning Explosion Proof and Hazardous Area communications equipment must be strictly followed and adhered to.
For detailed information refer to published documents on hazardous location definitions and installation requirements presented by: 1) NEC®, 2) CEC Canadian Electrical Code, 3) IEC