Modular Enclosure & Disconnect Enclosure Packages
Modular enclosure systems can provide many benefits over traditional unibody enclosures. Both modular and unibody enclosures are designed to house industrial components and to protect them from the surrounding environment. They are also designed to protect operators from electric shock. A traditional unibody enclosure is formed from a single, molded unit while a modular enclosure is a combination of a frame, rails, panels, doors and accessories.
Hoffman PROLINE Industrial Packages are ready-to-use enclosures that make it unnecessary to order each component separately. A single part number includes a frame, a solid front door, a solid rear door, a solid top, full subpanel, a gland plate and lifting eyes.
Hoffman PROLINE G2 Seismic Industrial Packages are capable of withstanding Zone 4 seismic activity with no degradation to functional performance or structural integrity. The panel load is 1,000 pounds. A single part number includes the frame, solid single door with a key-locking handle, solid rear cover, solid top, solid side covers, full mounting subpanel, 100 mm fully-sealed base, gland plate and lifting eyes.
Hoffman PROLINE-DD Modular Enclosures are modular disconnect systems that provide application flexibility. One or two door models can be bolted together in any configuration.
Rittal Modular Enclosure Bays are NEMA Type 12 steel enclosures with one or two door designs. The package includes the frame with door(s), roof plate, rear panel, gland plate, mounting plate, 3 mm double-bit lock and 4 eyebolts.
Products
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.