NEMA 12 is a standard for electrical enclosures that provides protection against dust, dirt, and dripping water. These enclosures are commonly used in industrial and commercial settings where equipment needs to be safeguarded from environmental factors. The NEMA (National Electrical Manufacturers Association) rating system classifies enclosures based on their ability to protect electrical components. A NEMA 12 enclosure is typically made of metal or plastic and is designed for indoor use, ensuring that sensitive equipment remains operational in less-than-ideal conditions.