nVent Hoffman Electrical Enclosures

More Information about Hoffman Enclosures

An nVent Hoffman enclosure is built to high quality standards to allow for dependable performance in harsh environments. It's meant to contain and protect electrical threats, and in doing so, help maintain the integrity of electrical systems and the safety of people who might otherwise come into contact with hazardous electrical components. nVent Hoffman makes a number of products, and carries a good stock of them, so that you don't have to wait long—if at all—to get them—to commercial, industrial, or specialized application electrical enclosures. For a variety of your business needs, nVent Hoffman offers durable, code-compliant housing solutions for electrical and electronic equipment.

Wall-Mount Enclosures

nVent Hoffman wall-mount enclosures, junction boxes and electrical boxes, including the industry-leading Concept series, connect and protect critical controls in virtually any environment. Choose from a broad range of wall-mount models, configurations, mounting options, sizes, finishes, type ratings, and materials such as mild steel.

Free-Stand Enclosures 

nVent Hoffman free-stand enclosures safeguard critical controls in virtually any environment and keep operations running smoothly. Choose from a broad range of models, configurations, mounting options, sizes, finishes and type ratings, including NEMA 4, NEMA 4X and NEMA 12. Standard depths ranging from 8" to 36" (20.32cm to 91.44cm) and one- to six-door enclosures with front or front and rear access.

Disconnect Enclosures 

nVent Hoffman disconnect enclosures protect people and equipment, while preventing and mitigating electrical hazards. From disconnect enclosures to electrical interlocks, data ports, data pockets, safety lockouts and accessories, Hoffman offers a comprehensive, industry-leading safety solution.

nVent Hoffman disconnect enclosures are integral to data communications systems, providing reliable protection for electronic controls and mission-critical electrical systems.

Modular Enclosures 

nVent Hoffman modular enclosures are designed to make electrical enclosures easier to use and faster to populate, featuring a continuous hinge for enhanced durability and corrosion resistance. PROLINE G2 enclosures have a higher load rating and a subpanel that can hold more weight than competing products and is available in Type 12, Type 3R and can accommodate seismic applications.

Commercial Enclosures 

nVent Hoffman commercial enclosures are designed and built to meet the needs of commercial construction, from office buildings and retail facilities, to hospitality, high-rise and health care campuses. Choose from a comprehensive portfolio of 3,000 commercial enclosures, with options for materials, sizes, styles, accessories and more.

nVent Hoffman products are known for their reliability, quality, and compliance with international standards, making them ideal for commercial applications.

Hazardous Location Enclosures 

nVent Hoffman hazardous location enclosures protect electrical controls and improve system reliability, while meeting the needs of unique certifications and classifications for hazardous locations. Choose from an extensive line of enclosures to protect electrical components in environments subject to potentially hazardous atmospheres created by vapor or dust. Includes ATEX- and IECEX-certified enclosure platform for areas rated Zone 1 and Zone 2.

HMI Enclosure Solutions 

Vent Hoffman HMI enclosure solutions are designed to accept most major manufacturers' operator interface devices and control components. From pushbutton enclosures to more complex enclosure and modular support arm systems for advanced controls, nVent Hoffman offers a broad range of HMI product options.

FAQs

What are Hoffman enclosures used for?

Hoffman enclosures are used to protect electrical and electronic components from dust, moisture, corrosion, and environmental factors in industrial, commercial, and outdoor applications, ensuring safety, compliance (nVent Hoffman products comply with UL, NEMA, CSA and other international standards), and system reliability.

What additional protection is needed to prevent dirt from entering Hoffman enclosures?

To prevent dirt from entering Hoffman enclosures, additional protection such as NEMA-rated gaskets, dust-tight seals, ventilation filters, and proper cable entry fittings should be used to maintain a secure and contaminant-free environment.

Enclosure Selection Basics

Electrical enclosures are cabinets that are designed to house electrical components. Their main function is to protect the components, as well as to protect the operators from electrical hazards. Enclosures are typically made of solid plastics, fiberglass and metal materials, such as carbon steel, stainless steel and aluminum.

One of the most important things to consider when selecting an electrical enclosure is the NEMA rating. NEMA stands for National Electrical Manufacturer Association. They have developed a rating system which determines the types of environments an electrical enclosure can be used in. 

NEMA 1 and a NEMA 12 enclosures

Both of these enclosures are intended for indoor use only. They are both dust resistant. The NEMA 12 enclosure is rated for damp environments. The NEMA 1 is rated only for dry environments.  

NEMA 4 and NEMA 4X enclosures

Both of these enclosures can be used indoors as well as outdoors. They are both dust resistant. They are also water resistant and corrosion resistant. NEMA 4X has an extra layer of corrosion resistance.

NEMA 7 enclosures

This is a more specific type of enclosure that is rated for use in hazardous environments. It is rated to contain an explosion within the enclosure and not cause any sort of external hazard. 

Size

When selecting the size of an enclosure, it is important to consider the following: how much space will the electrical components occupy, how much space is needed around each component, is there enough room to run all of the wires and how much space is needed outside of the enclosure?

Temperature

When selecting an enclosure, it is important to consider both the ambient temperature and the temperature that is generated inside of the enclosure. When an enclosure is located outside in direct sunlight, that heat can be transferred inside the enclosure. Also, each component inside of the enclosure generates a certain amount of heat.