Standards
– IEC 60529 classifies the IP Codes for enclosures internationally.
– NEMA publishes enclosure type standards in the United States.
– NEMA standards cover corrosion resistance and protection from rain and submersion.
– Enclosures for electrical equipment in hazardous areas must meet specific regulations.
– Performance requirements for enclosures may vary based on industry and location.
Materials
– Electrical enclosures are made from rigid plastics or metals.
– Steel, stainless steel, and aluminum are commonly used metals.
– Plastic enclosures are suitable for indoor applications.
– Metal cabinets provide conductivity for electrical safety bonding and shielding.
– Non-metallic enclosures may require additional installation steps for proper bonding.
Stainless steel and carbon steel
– Carbon steel and stainless steel are durable and corrosion-resistant.
– Carbon steel is used for stamping and moderate forming applications.
– Stainless steel enclosures are resistant to bacteria and fungi.
– Stainless steel enclosures can be specified for wash-down cleaning.
– Both materials are moisture and chemical resistant.
Aluminum
– Aluminum is lightweight, strong, and corrosion-resistant.
– It performs well in harsh environments and can withstand high impact.
– Aluminum acts as a shield against electromagnetic interference.
– It is cost-effective and widely used in electrical enclosures.
– Aluminum is suitable for various industries and applications.
Polycarbonate and Fiberglass
Polycarbonate:
– Polycarbonate is strong, lightweight, non-conductive, and non-magnetic.
– It is resistant to corrosion and some acidic environments.
– Polycarbonate enclosures are sensitive to abrasive cleaners.
– This material is easy to modify and customize.
– It is commonly used in electrical enclosures.
Fiberglass:
– Fiberglass enclosures resist chemicals in corrosive applications.
– They can be used in both indoor and outdoor environments.
– Fiberglass can withstand constant exposure to wet conditions.
– This material provides durability and longevity.
– It is a popular choice for various industries and settings. Source: https://en.wikipedia.org/wiki/Electrical_enclosure
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An electrical enclosure is a cabinet for electrical or electronic equipment to mount switches, knobs and displays and to prevent electrical shock 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 enclosures for electrical equipment in hazardous areas, such as petrochemical plants or coal mines. Electronic packaging may place many demands on an enclosure for heat dissipation, radio frequency interference and electrostatic discharge protection, as well as functional, esthetic and commercial constraints.
