Electrical Enclosures & Junction Boxes
Electrical Enclosures & Junction Boxes for Industrial Applications
Electrical enclosures and junction boxes might not get much attention, but they play a vital role in keeping electrical and electronic systems protected. They shield sensitive components from dust, moisture, and other tough environmental challenges that come with industries like oil and gas, water treatment, and manufacturing.
These enclosures come in many sizes, materials, and NEMA ratings to match the conditions of your workspace. Whether you’re working in a clean control room or in a rugged outdoor setting, the right enclosure helps keep everything running safely and reliably. In places like the oil and gas field, where equipment is constantly exposed to harsh elements, durable enclosures and junction boxes provide a strong first layer of protection for critical connections.
Why Junction Boxes Matter
Junction boxes may be small, but they make a big difference in any electrical system. They safely contain wire connections, helping prevent electrical hazards while keeping access simple for maintenance or troubleshooting. A good junction box keeps things organized, protected, and easy to work with when updates or repairs are needed.
Browse our full selection of electrical enclosures and junction boxes from trusted brands such as Hoffman, Rittal, Stahlin, Allied Moulded, and Phoenix Contact — all available with fast shipping and knowledgeable support from RSP Supply.
Don’t Forget the Accessories
To get the most out of your enclosure, the right accessories are key. Items like vent kits, mounting panels, DIN rails, and thermal management components can help improve airflow, simplify installation, and extend the life of your equipment. The right accessories ensure your enclosure performs exactly as your application demands — from better cable organization to added protection against temperature and moisture.
nVent Hoffman Enclosures
Rittal Enclosures
Stahlin Enclosures
Allied Moulded Enclosures
Phoenix Contact Enclosures
Schneider Electric Enclosures
Killark Enclosures
Adalet Enclosures
More Information about Electrical Enclosures and Junction Boxes
Electrically, enclosures, and junction boxes are basic in protecting and organizing power distribution networks. They have features like removable panels, secure locking mechanisms, and flexible mounting options; all of which make them very versatile for a wide range of industrial applications. From large-scale systems in industry to compact installations in commercial buildings, these products are used everywhere to make power distribution networks safe and efficient. And because they come in a wide range of sizes and configurations, businesses can always find the enclosure or box that's ideal for protecting equipment, no matter where it may be.
Enclosure Selection Basics
Electrical enclosures are cabinets that are designed to house electrical components and electrical controls. Their main function is to protect the components, as well as to protect the operators from electrical hazards and ensure electrical safety. Enclosures are typically made of solid plastics, fiberglass, and metal materials, such as carbon steel, stainless steel, and aluminum, to provide robust protection for electronic controls and electronic equipment.
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.