While E91E aluminum offers excellent electrical conductivity and light weight, its surface must be properly treated to ensure durability and safe operation in electrical systems. Xinyi offers a range of surface treatment options for E91E busbars, tailored to meet environmental, electrical, and mechanical requirements.

Why Surface Treatment Matters

Aluminum naturally forms a passive oxide layer, but in aggressive environments—such as coastal areas, high humidity, or polluted air—this layer may not provide sufficient protection. Proper surface treatment improves corrosion resistance, enhances insulation, and reduces arcing risk when busbars are installed close to each other or to grounded components.

Common Surface Treatment Options for E91E Busbars

• Anodizing: Creates a dense oxide layer that increases corrosion resistance and surface hardness. Suitable for outdoor switchgear and high-humidity areas.
• Powder Coating: Adds an insulating and protective polymer layer, available in various colors for phase identification or branding.
• Epoxy Insulation Coating: Provides high-dielectric strength and resistance to mechanical abrasion. Often used in compact electrical panels or control systems.
• Heat-Shrink Insulating Sleeve: Offers full coverage and easy installation, ideal for retrofit applications or field adjustments.
• Clear or Anti-Oxidation Coatings: Preserve aluminum appearance while adding a thin chemical barrier against environmental exposure.

Application-Specific Recommendations

Depending on where your E91E busbar is installed, Xinyi recommends tailored treatment combinations:

• For indoor low-voltage cabinets: Epoxy or powder coating with insulation grade ≥ 1kV.
• For solar inverter boxes: Anodized or hybrid coated for salt-spray resistance.
• For high-density power racks: Thin film or insulation sleeve to save space while ensuring safety.
• For marine or offshore equipment: Multi-layer anti-corrosion coatings with high UV resistance.

Compliance with Safety Standards

Xinyi’s surface-treated busbars comply with IEC, UL, and ASTM standards for dielectric strength, flammability, and thermal aging. Coatings are applied under controlled conditions to ensure consistent thickness and adhesion.

Customization and Color Coding

We offer RAL-coded coatings for L1/L2/L3/N/PE phase identification, custom logos, and edge masking options. This simplifies installation, maintenance, and troubleshooting in complex systems.

 Extend the Life and Safety of Your E91E Busbars

Choosing the right surface treatment for E91E aluminum busbars helps ensure reliable operation in harsh environments while minimizing maintenance. Xinyi delivers fully processed, ready-to-install busbars to your specifications, saving you time and effort during assembly.

Contact Xinyi for Technical Guidance

Get in touch to discuss your application environment and let Xinyi recommend the best surface protection method for your E91E aluminum busbars. Sample coatings and technical datasheets are available upon request.