Dependable NEMA 4X Enclosures

One of the challenges to installing electrical components outdoors is finding adequate protection from the natural elements. Over time, wind, moisture, extreme temperatures and UV rays can cause any electrical component to deteriorate. Electrical systems will suffer from poor connections and unsafe electrical conditions. Building owners will spend more money on electrical repairs and part replacement. Luckily, we can help.

The Solution: NEMA 4X Enclosures

To protect electrical components on the outside of a facility, contractors and electricians can install NEMA 4X Enclosures almost anywhere on the premises. NEMA 4X enclosures provide long-lasting protection for all indoor and outdoor electrical components. They are ideal for creating a shield against wind, rain, snow, heat, UV rays and extreme temperatures.

Understanding NEMA 4X Enclosure Rating

The National Electrical Manufacturer Association establishes standards for various grades and types of electrical enclosures. The ratings are based on the following criteria:Access to Hazardous Parts: How easily can someone get inside the box to the electrical components? How safe is it from intrusion?Environmental Conditions: How well does the enclosure hold up under certain environmental conditions? How well does it hold up to outside elements such as wind, moisture, corrosion, UV rays and extreme temperatures?Applications: What is the enclosure going to be used for? For instance, enclosures are often used in industries such as alternative energy, agriculture, marine, oil and gas or food and beverage.Material: What type of material is the enclosure made from? Options include aluminum, stainless steel, ABS and polycarbonate.Given the criteria, the NEMA 4X Enclosure Rating is assigned to an enclosure based on how well it meets all the standards as well as its intended applications. Therefore, the rating differs based on what the enclosure is used for, not the quality of its construction.For example, an enclosure with a NEMA rating of 4X must be watertight and usable outdoors on ship docks, dairy facilities, wastewater treatment plants and breweries. The X indicates that the enclosure must have high resistance to corrosion.

Types of Enclosure Materials

Environmental conditions may determine what kind of enclosure material is needed to surround an electrical part. These are some of the most common NEMA 4X enclosure materials:Aluminum: Aluminum is lightweight, provides superior corrosion resistance (especially against hydrogen sulfide) and high heat dissipation due to its excellent heat conducting characteristics.ABS: ABS is a high-grade steel that is often used in ship building. It has an impressively high tensile strength, which is why it’s perfect for protecting wiring, outlets and other electrical components.Polycarbonate (PC): Polycarbonate offers the same transparency as glass but is far more impact and scratch resistant. It allows an electrician to view the contents of the box without sacrificing the robust features needed to withstand the outside elements.Stainless Steel: Like aluminum, stainless steel eliminates corrosion and rust that can occur in or around an enclosure. It is also one of the most durable materials used in electrical systems and other applications.

Superior Outdoor Protections for Your Electrical Components

Contractors often use enclosures in outdoor areas where dirt, water and corrosion are likely to be a problem. For this reason, standard enclosures must be watertight, airtight and immune to corrosive elements that would otherwise eat through the box. They must meet NEMA and IP industry standards to ensure ultimate protection for wiring, connections and other key electrical components in an electrical system.In addition to moisture and corrosion, enclosures must also be sealed so that dust cannot get inside. Dust buildup can inhibit proper electrical flow and create a hazardous environment. Electrical wiring must be free of dust buildup for the current to flow without any problems.

Applications for Offshore and Marine Environments

Some of the most common uses for NEMA electrical enclosures are offshore, marine and highly corrosive applications. Aluminum enclosures are ideal for use in areas where moisture is present due to their lightweight features. However, contractors may want to anodize the surface of the enclosure to help it withstand corrosion for more extended periods.Stainless steel enclosures with a NEMA 4X rating are well suited for corrosive environments due to their chromium and nickel content. The only downside to stainless steel is that it’s heavier than aluminum. Stainless steel hardware, however, is extremely durable and holds up well in offshore and marine environments, as it is less likely to wear out under intense conditions out at sea.For contractors, property owners, shipyard companies and other companies looking for a durable, highly corrosive-resistant enclosure, a NEMA 4X enclosure is a great option. The enclosure will provide adequate protection for electrical components in environments where moisture and corrosion could be an issue.