An electrical enclosure is a cabinet for electrical equipment to protect the contents from the environment, mount switches, knobs and displays and to prevent electrical shock.

The National Electrical Manufacturers Association publishes NEMA standards for the performance of various classes of electrical enclosures. The standards cover corrosion resistance, ability to protect from rain and submersion, etc.
Electrical enclosures are made from plastic, steel, aluminum, wood, and in the past Bakelite was used. Enclosures often have partially punched openings (knockouts) meant for optional later removal to accommodate standard cables or conduits.
An example of an electrical enclosure is the metal box of a Radio receiver.

External links

• NEMA website.

Electrical engineering | Schaltschrank