Sunenergy System

Flexible busbar

Sunenergy System’s insulated flexible copper busbars (or insulated flexible copper bar) are manufactured from an assembly of copper strips or sheets (Cu-ETP), which reduces the skin effect and are protected by a PVC extrusion (from 9mm to 50mm), thereby ensuring the dielectric insulation of the product despite deformations and the conditions of use of the bars.

They are essential components in numerous electrical and construction applications due to their high conductivity and flexibility. We offer a wide range of flexible copper bars designed to meet the specific needs of our customers.

Sunenergy System can also supply custom-cut flexible bars. According to customer specifications, we can shape, drill or make holes and serve ready for their assembly in series.

Contact us if you want more information or to purchase custom-made copper busbar

Features of the Flexible Copper Busbar

Integrated thin layers of electrolytic copper.

Flexible busbar, easy to bend, fold, and twist, improving assembly flexibility, shortening connections, and reducing the necessary space.

Better power density than cable with a lower skin effect ratio.

No terminals required, reducing installation times and improving vibration resistance.

Reduces the total cost of installation.

Complies with wiring material requirements for cold bending tests at -40 ° C and -50 ° C (-40°F and -58°F).

Insulated by high-strength, self-extinguishing PVC with less than 20% contact with the conductor for high flexibility.

Smaller and more flexible size than a cable, comparable in ampacity.

Quick connections by drilling and screwing directly through the copper laminates, securing the end of the flexible bar.

Weight and material savings compared to cable alternatives (lower skin effect).

100% tested dielectric protection.

Complies with EAC and RoHS.


High Electrical Conductivity

Flexible copper bars are made from high-purity electrolytic copper, ensuring excellent electrical conductivity.


Their design allows for easy installation and adaptability in confined spaces and applications requiring movement or bending.


Copper is resistant to corrosion, ensuring a long product lifespan.

Easy to Install

Thanks to their flexibility and design, flexible copper bars can be installed quickly and easily, reducing installation time and costs.


We offer custom-made copper bars to meet the exact specifications of our clients.

Common Applications of Copper Bars

Electrical Panels

Copper bars for electrical panels are ideal for power distribution in industrial and commercial installations.

Grounding Systems

Used in grounding systems to ensure safety and protection against electrical overloads.

Copper Busbars

Essential in busbar systems for connecting multiple electrical connection points.

Flexible Systems

Flexible copper bars and strips are crucial in applications where continuous movement is required.

Types of Copper Bars

There are several types of copper busbars based on their use and specific characteristics. Here are the most common ones:

Rigid Copper Busbars

These types of busbars are solid and mainly used for the construction of electrical panels, power distribution equipment, transformers, and various industrial applications where flexibility is not a primary need.

Insulated Flexible Copper Busbars

These are copper busbars that are covered with an insulating material to prevent short circuits and electrical discharges. This type of busbar is used in applications where safety is paramount.

Tinned Copper Busbars

These are copper busbars coated with a thin layer of tin. The tin coating provides additional protection against corrosion, making them suitable for use in wet or corrosive environments.

Bussed Copper Busbars

These are solid, rigid copper bars, also known as bus bars. They are commonly used in electrical distribution boards and other installations where efficient and safe current distribution is required. Their rigidity makes them ideal for permanent installations where no movement or flexibility is needed. They are usually sized and installed based on the maximum current they are expected to conduct.

Perforated Copper Busbars

Perforated copper busbars are copper bars that have been drilled with holes at regular intervals along their length. These perforations allow the busbar to be easily fastened to different surfaces or for electrical components to be directly screwed onto the busbar.

Copper Grounding Busbars

Used in grounding systems to provide a safe path for electricity in case of an electrical fault.

Product Summary

Sunenergy System’s flexible copper bars are a robust and efficient solution for various electrical and industrial applications. With our customized options and high-quality products, we are committed to providing solutions that perfectly fit our customers’ needs.

For more information about our flexible copper bars and other products, visit our contact page or call us directly. We are here to help you find the best solution for your needs.

FAQ about copper busbar

What is a copper busbar?

A copper busbar is a flat bar of copper, solid or flexible, with high electrical and thermal conductivity. It is used in electrical panels, grounding systems, and the manufacturing of electrical components. Its design and type, like perforated or electrolytic copper, vary according to the application.


The current capacity or amperage of a copper busbar depends on multiple factors including its size, the way it is installed, and the environmental conditions. Contact us to give you more specific information on this topic.

Do you make custom orders for copper busbars?

Of course! Upon request, we make custom-cut orders for flexible busbars. Contact us to provide you with the solution that best suits your needs.

Differences between Copper and Electrolytic Copper

Electrolytic copper is characterized by its high purity, which gives it better electrical conductivity and lower resistance compared to conventional copper. This makes it especially suitable for applications where efficiency and reliability are crucial

What is the price of the copper busbar?

Unfortunately, we cannot give a fixed price for the flexible copper busbar as it can vary widely depending on several factors, including the type of busbar, the purity of the copper, the dimensions of the busbar, and the current copper market. If you contact us, we can learn more about your project and provide an estimated cost.
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