An electrical enclosure is a cabinet or box that
protects electrical or electronic equipment and prevents electrical
shock. Enclosures are usually made from rigid plastics or such metals as
steel, stainless steel, or aluminum. Enclosures are rated to designate
protection against hazardous, non-hazardous, and other specific
Enclosures protect electrical equipment
in diverse building, industrial, and utility applications. They may
also shield equipment from electromagnetic and radio frequency
interference. Enclosures are often used to protect the following types
- Circuit breakers, contactors, control panels, and switches
- Distribution boards and panelboards
- Pressurization and purging equipment and systems
- Telephone cabinets
Since enclosures must be installed in accordance with the National Electrical Code®
(NEC) and all applicable local regulations, Members develop proposals
for the NEC, International Code Council codes, and other codes.
- Maintains the Standard NEMA 250 Enclosures for Electrical Equipment (1,000 Volts Maximum) and related technical documents and guidelines
industry input used in the development of U.S. positions on
International Electrotechnical Commission (IEC) Standards; the
international equivalent of the NEC is IEC 60364
supports the U.S. National Committee Technical Advisory Group to IEC
TC70 (Degrees of protection provided by enclosures) and actively works
with entities in Canada, Mexico, and United States on regional standards
through CANENA (Council for Harmonization of Electrotechnical Standards
of the Nations in the Americas)
- Building electrical and telecommunication rooms
- Chemical plants
- Electric vehicles charging equipment
- Manufacturing plants
- Mining, oil, and gas facilities
- ABB Inc.
- ABB Installation Products, Inc.
- Allied Moulded Products, Inc.
- Arlington Industries, Inc.
- Atkore International
- Boltswitch, Inc.
- Calpipe Industries, LLC
- Eaton Residential & Wiring Devices Division
- Eaton’s B-Line Business
- Eaton’s Crouse-Hinds Business
- Emerson Automation Solutions
- Ensto USA LLC
- Hubbell Incorporated
- Hubbell Wiegmann
- Killark Electric, A Hubbell Company
- Legrand, North America
- Milbank Manufacturing Company
- Rittal North America LLC
- Robroy Industries, Inc.
- Schneider Electric
- Siemens Industry, Inc.
- Snake Tray
- Space Age Electronics, Inc.