Epoxy coated busbar

What coating characteristics should be considered when selecting an epoxy-coated bus bar?

• Insulation Rating:​ The dielectric strength (kV/mm) of the coating and the final product's withstand voltage.
• Thermal Properties:​ The coating's thermal conductivity, long-term operating temperature (UL Temperature Index), and flame retardant rating (e.g., UL94 V-0).
• Mechanical Properties:​ The coating's adhesion, flexibility, abrasion resistance, and impact resistance.
• Environmental Suitability:​ Whether it meets specific requirements like mildew resistance or chemical resistance.

What are the typical application scenarios for epoxy-coated bus bars?

• Internal connections in high-voltage power cabinets and switchgear.
• New Energy Sector: Connections within battery packs for Energy Storage Systems (ESS), charging pile modules.
• DC busbars in rail transit and marine power systems.
• Any application requiring insulation of bare copper busbars in harsh, dusty, or humid environments.

What are the advantages of the epoxy coating insulation layer?

• Excellent Insulation:​ Forms a uniform, seamless insulating layer with high dielectric strength, preventing creepage.
• Superior Protection:​ Waterproof, moisture-proof, salt spray resistant, chemically resistant, and provides good mechanical protection.
• Heat Dissipation:​ Some thermally conductive epoxy formulas help transfer and dissipate heat from the conductor.
• Design Flexibility:​ Allows for coating of single bus bars with extremely complex shapes, achieving complete coverage insulation.

What is the fundamental difference between epoxy-coated bus bars and laminated bus bars?

• Structure:​ Epoxy-coated bus bars are typically single or multiple independent copper bars​ coated with a uniform layer of epoxy resin insulation via a spraying process. Laminated bus bars are an integrated structure of multiple conductor and insulation film layers pressed together.
• Performance:​ Epoxy-coated bus bars focus more on high insulation strength, environmental corrosion resistance, and mechanical protection, suitable for medium/high voltage applications with stringent insulation requirements. Their electrical performance optimization (e.g., for low inductance) is generally not as refined as that of laminated bus bars.
• Cost & Application:​ For ultra-high voltage (e.g., several kV and above) or for single conductors with very complex shapes requiring full-coverage insulation, epoxy coating is often a more cost-effective choice.

How do we request samples or proceed with small-batch trial production?

• You can submit a request via the "Contact Us" page on our website or directly contact your sales engineer. Please provide confirmed drawings and technical specifications. We will provide a sample quote, prototyping timeline, and a clear test plan. We support small-batch trial production orders to assist with your system-level validation.

Can you design bus bars to fit our complete system structure or PCB layout?

• Absolutely.​ This is a core advantage of our service. We specialize in co-design. You simply need to provide PCB files (e.g., ODB++, Gerber), 3D models or dimension drawings of key components (e.g., IGBT modules, capacitors), and enclosure spatial constraints. Our engineers will design a bus bar that integrates perfectly with your system, offers optimal routing, and ensures easy installation and the most reliable electrical connections.