The Power of Protection: Why Non-Metallic Control Boxes Are the Smarter Choice

 In industrial environments where safety, durability, and reliability are non-negotiable, control boxes serve as a critical line of defense. These enclosures house sensitive electrical components, shielding them from harsh conditions, unauthorized access, and environmental hazards.

While traditional metal enclosures have long been the standard, non-metallic control boxes are gaining traction across industrial sectors—and for good reason. Their unique combination of performance, protection, and practicality makes them an increasingly preferred solution for modern industrial facilities.

What Is a Non-Metallic Control Box?

A non-metallic control box is an electrical enclosure made from composite materials such as fiberglass-reinforced polyester (FRP) or polycarbonate. Unlike steel or aluminum boxes, these non-conductive enclosures provide superior protection against corrosion, UV rays, and harsh weather—without sacrificing structural integrity.

Allied Moulded, a leader in non-metallic enclosures, engineers a wide range of control boxes specifically designed to meet the demands of both indoor and outdoor industrial applications.

Benefits of Non-Metallic Control Boxes in Industrial Settings

1. Corrosion Resistance in Harsh Environments

In facilities where exposure to moisture, chemicals, or salt spray is common—such as water treatment plants, food processing facilities, or coastal installations—metal boxes are prone to corrosion over time. This degradation can compromise the safety and performance of electrical systems.

Non-metallic enclosures, by contrast, are inherently resistant to corrosion. This makes them ideal for corrosive environments, dramatically extending the life of your control systems and reducing maintenance costs.

2. Lightweight Yet Durable

Non-metallic control boxes offer excellent impact resistance while remaining significantly lighter than their metal counterparts. This reduces strain during installation and makes it easier to mount enclosures in difficult or overhead locations—saving time, labor, and potential injury.

3. UV and Weather Protection

Outdoor electrical installations are constantly exposed to sun, wind, rain, and temperature extremes. Polycarbonate and fiberglass-reinforced enclosures are designed to handle it all, offering UV-stabilized surfaces and NEMA-rated protection against water ingress, dust, and environmental threats.

4. Non-Conductive Safety Advantage

Unlike metal enclosures, non-metallic materials are non-conductive, reducing the risk of accidental electrical shock or arcing in high-voltage environments. This makes them especially valuable in industries with heightened safety requirements or in areas governed by strict NEC and NFPA guidelines.

5. Lower Lifecycle Costs

Because they resist rust, dents, and fading, non-metallic control boxes require less maintenance and replacement over time. For many facilities, this leads to a lower total cost of ownership (TCO), making non-metallic options not only safer—but also more economical.

Common Applications for Non-Metallic Control Boxes

Non-metallic control boxes can be found across a wide range of industrial and commercial sectors, including:

• Water and wastewater treatment plants
• Food and beverage processing
• Agriculture and irrigation systems
• Oil and gas operations
• Renewable energy installations
• Maritime and coastal facilities
• Manufacturing plants

Anywhere exposure to corrosive elements or outdoor conditions exists, non-metallic enclosures provide a clear performance advantage.

Allied Moulded: Engineered for Industrial Excellence

Allied Moulded’s lineup of non-metallic control boxes offers industry-leading features, including:

• Fiberglass-reinforced polyester construction
• NEMA 4X and 6P ratings for water-tight protection
• Optional stainless-steel latches and mounting accessories
• Available in multiple sizes and configurations
• UL/cUL certifications for peace of mind and compliance

Each enclosure is designed with real-world challenges in mind, offering rugged performance without compromising on flexibility or aesthetics.

Final Thoughts: Don’t Settle for Outdated Materials

In today’s demanding industrial landscape, outdated metal boxes just don’t cut it anymore. When you choose non-metallic control boxes, you’re choosing a smarter, longer-lasting solution that protects your investments—and your people.

If you’re ready to upgrade your facility’s electrical protection, contact Allied Moulded Products today to learn more about our line of premium non-metallic enclosures built for industrial strength and performance.

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