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Electrical enclosures are usually made from rigid plastics, or metals such as steel, stainless steel, or aluminum. Steel cabinets may be painted or galvanized. Mass-produced equipment will generally have a customized enclosure, but standardized enclosures are made for custom-built or small production
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are both used for enclosure construction due to their high durability and corrosion resistance. These materials are also moisture resistant and chemical resistant. They are the strongest of the construction options. Carbon steel can be hot or cold rolled. Hot rolled carbon steel is used for stamping
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Telecommunication enclosures are fully assembled or modular field-assembled transportable structures capable of housing an electronic communications system. These enclosures provide a controlled internal environment for the communications equipment and occasional craftspeople. The enclosures are
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to equipment users and protect the contents from the environment. The enclosure is the only part of the equipment which is seen by users. It may be designed not only for its utilitarian requirements, but also to be pleasing to the eye. Regulations may dictate the features and performance of
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Stainless steel enclosures are suited for medical, pharma, and food industry applications since they are bacterial and fungal resistant due to their non-porous quality. Stainless steel enclosures may be specified to permit wash-down cleaning in, for example, food manufacturing areas.
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Metal cabinets may meet the conductivity requirements for electrical safety bonding and shielding of enclosed equipment from electromagnetic interference. Non-metallic enclosures may require additional installation steps to ensure metallic conduit systems are properly bonded.
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runs of equipment. For plastic enclosures ABS is used for indoor applications not in harsh environments. Polycarbonate, glass-reinforced, and fiberglass boxes are used where stronger cabinets are required, and may additionally have a gasket to exclude dust and moisture.
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used for electrical enclosures is strong but light, non-conductive and non-magnetic. It is also resistant to corrosion and some acidic environments; however, it is sensitive to abrasive cleaners. Polycarbonate is the easiest material to modify.
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Aluminum is chosen because of its light weight, relative strength, low cost, and corrosion resistance. It performs well in harsh environments and it is sturdy, capable of withstanding high impact with a high malleable strength.
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enclosures resist chemicals in corrosive applications. The material can be used over all indoor and outdoor temperature ranges. Fiberglass can be installed in environments that are constantly wet.
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designed with locks, security, and alarms to discourage access by unauthorized persons. Enclosures can be provided with a decorative facade to comply with local building requirements.
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and moderate forming applications. Cold rolled sheet is produced from low carbon steel and then cold reduced to a certain thickness and can meet ASTM A366 and ASTM A611 requirements.
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standards for the performance of various classes of electrical enclosures. The NEMA standards cover corrosion resistance, ability to protect from rain and submersion, etc.
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501:"Electrical Cabinets Fire Modeling with Fire Dynamics Simulator and CFAST"
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protection, as well as functional, esthetic and commercial constraints.
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IEC IP definitions, and a comparison of IEC<>NEMA definitions
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What Is an
Electrical Enclosure? Definition, Using, Requirements
520:"Heat Release Rates of Electrical Enclosure Fires (HELEN-FIRE)"
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may place many demands on an enclosure for heat dissipation,
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Electro polished enclosure (control station), explosion-proof
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also acts as a shield against electromagnetic interference.
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457:"Stainless Steel Electrical Enclosures Product Reference"
482:"FDS-SMV : Fire Dynamics Simulator - SmokeView"
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55:. Unsourced material may be challenged and removed.
16:"Knock-outs" redirects here. For other uses, see
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524:National Institute of Standards and Technology
486:National Institute of Standards and Technology
363:that can be very intense (in the order of the
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227:National Electrical Manufacturers Association
505:Research Gate - Groupe de Recherche Feux GDR
222:(ingress protection rating) of enclosures.
563:IP Protection Ratings vs. NEMA Equivalency
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115:Learn how and when to remove this message
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192:electrical equipment in hazardous areas
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316:connectors
300:Fiberglass
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75:newspapers
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397:Rack unit
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371:See also
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220:IP Codes
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105:May 2023
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