When it comes to protecting sensitive electronic and industrial components, choosing the right enclosure is paramount. Two widely-used enclosure types are Diecast Aluminium and Glass Reinforced Polyester (GRP), each with its own unique features and benefits. In this detailed guide, we will explore the key differences, advantages, disadvantages, and applications of these enclosures. We will also highlight the exceptional quality of enclosures manufactured by Raychem, a trusted name in the industry.

At RMS Components, we pride ourselves on offering top-of-the-line Raychem enclosures that meet the highest standards of durability and performance. Whether you’re looking for robust protection in harsh environments or need lightweight yet durable solutions, our selection of Raychem diecast aluminium and GRP enclosures provides reliable options tailored to your specific needs.

Introduction to Raychem Enclosures

Raychem, a leader in the manufacturing of high-performance enclosures, offers a diverse range of products tailored to meet the stringent requirements of various industries. Known for their exceptional durability and reliability, Raychem enclosures are designed to protect your critical components in even the most demanding environments. RMS Components is proud to stock these industry-leading enclosures, providing our customers with the peace of mind that their equipment is well-protected.

What Are Diecast Aluminium Enclosures?

Diecast aluminium enclosures are meticulously crafted using aluminium alloy (AI Si 12) through a precision casting process. This method results in a robust, high-strength enclosure that offers superior protection for housed components. Raychem’s diecast aluminium enclosures are specifically designed for applications requiring resistance to environmental stress, mechanical impacts, and harsh conditions.

Key Features of Raychem Diecast Aluminium Enclosures

• Material: High-quality Diecast Aluminium Alloy (AI Si 12)
• Ingress Protection: IP66 rating, ensuring protection against dust and powerful water jets
• Gasket: Neoprene gasket with a temperature range of -40°C to +110°C for optimal sealing
• Surface Finish: Powder-coated in RAL 7001 for corrosion resistance and aesthetic appeal
• Lid Screws: Stainless Steel 1.4301 (A2), captive for durability and security
• Standards and Approvals: Meets DIN1725, IEC 60529, UL 508A, NEMA 4X & 6P, among other standards

Advantages of Diecast Aluminium Enclosures

1. Superior Mechanical Strength: Diecast aluminium enclosures from Raychem are exceptionally strong, making them ideal for protecting delicate components in demanding environments.
2. Corrosion Resistance: The aluminium alloy is naturally resistant to corrosion, further enhanced by a durable powder-coated finish. This makes it suitable for outdoor and marine applications.
3. Thermal Management: Aluminium’s excellent thermal conductivity helps dissipate heat generated by internal components, which is crucial in high-power applications.
4. Electromagnetic Interference (EMI) Shielding: Aluminium enclosures can effectively block EMI, ensuring that sensitive electronic components are protected from external interference.
5. Customizable: Raychem offers various sizes and configurations, allowing for customization based on specific needs.

Disadvantages of Diecast Aluminium Enclosures

1. Weight: Although diecast aluminium is lighter than some metals, it is still heavier than GRP, which could be a concern in weight-sensitive applications.
2. Higher Cost: The superior material and manufacturing process make diecast aluminium enclosures more expensive than GRP options.
3. Limited Chemical Resistance: While resistant to corrosion, aluminium may not be as effective in environments with harsh chemicals compared to GRP.

Applications of Diecast Aluminium Enclosures

Raychem diecast aluminium enclosures are ideal for:

• Outdoor Telecommunications: Protecting sensitive communication equipment from environmental factors.
• Marine Applications: Withstanding the corrosive effects of saltwater.
• Industrial Automation: Providing robust housing for control systems in harsh industrial environments.
• Power Distribution: Safeguarding electrical components and facilitating efficient thermal management.

What Are GRP Enclosures?

Glass Reinforced Polyester (GRP) enclosures are composed of polyester resin reinforced with glass fibers, creating a lightweight yet robust material. Raychem’s GRP enclosures are engineered to offer excellent protection against environmental hazards, chemicals, and electrical interference, making them a versatile solution for various industries.

Key Features of Raychem GRP Enclosures

• Material: Glass Reinforced Polyester, offering a high strength-to-weight ratio
• Ingress Protection: IP66 rating, with options for IP67 and IP68 on request
• Impact Resistance: Greater than 7 Joules, as per EN 60079-0, ensuring durability in high-impact environments
• Temperature Range: -40°C to +80°C, suitable for a wide range of applications
• Surface Resistance: Less than 109Ω, ensuring excellent electrical insulation
• Flammability: V0 self-extinguishing as per UL94, enhancing safety in case of fire

Advantages of GRP Enclosures

1. Lightweight Construction: Raychem GRP enclosures are much lighter than metal alternatives, simplifying installation and reducing strain on mounting surfaces.
2. Chemical Resistance: GRP is highly resistant to a wide array of chemicals, making it suitable for use in corrosive environments such as chemical plants.
3. Electrical Insulation: With a high dielectric strength (18 kV/mm), GRP enclosures provide excellent insulation, protecting electrical components from surges and interference.
4. Cost-Effective: Typically more affordable than diecast aluminium, GRP enclosures offer an economical solution without compromising on protection.
5. Fire Safety: The self-extinguishing property of GRP reduces the risk of fire spreading, making it a safer choice for installations in fire-prone areas.

Disadvantages of GRP Enclosures

1. Lower Mechanical Strength: While durable, GRP does not offer the same level of impact resistance as diecast aluminium, limiting its use in extremely harsh environments.
2. Limited Heat Dissipation: GRP’s insulating properties mean it does not dissipate heat as effectively as aluminium, which could be a concern in high-temperature applications.

Applications of GRP Enclosures

Raychem GRP enclosures are particularly well-suited for:

• Chemical Processing Plants: Withstanding exposure to corrosive substances while providing excellent protection for electrical components.
• Electrical and Telecommunications: Ensuring safe housing for electrical systems with superior insulation and lightweight construction.
• Food and Beverage Industry: Offering non-corrosive and easy-to-clean solutions for food processing environments.
• Offshore and Marine Applications: Providing protection against harsh marine conditions without the risk of corrosion.

Conclusion

When choosing between Raychem’s diecast aluminium and GRP enclosures, consider the specific needs of your application. Diecast aluminium enclosures excel in high-strength, outdoor, and heat-sensitive environments, offering robust protection and EMI shielding. On the other hand, GRP enclosures provide a lightweight, cost-effective solution with superior chemical resistance and electrical insulation, ideal for corrosive and insulated environments.

At RMS Components, we offer a wide range of Raychem enclosures to suit your specific needs. By understanding the advantages and limitations of each material, you can select the most suitable Raychem enclosure to ensure the safety, reliability, and longevity of your components in any setting. View our range today to explore our comprehensive selection of Raychem enclosures and make your purchase with confidence.