Flexible Insulated Busbars

Flexible Insulated Copper Busbar-available in standard 2 or 3 meter lengths and custom cut lengths.

Copper flexible busbar is made by stacks of thin electrolytic copper and provided with Black Insulation according to specifications required. Design can be fully customizable upon our customers requirements.


  • Flexibar is formed with multiple layers of thin electrolytic copper, available in plain or tin plated.

  • Flexibar connections are made by punching directly through the laminates. There are no lugs to purchase, helping to eliminate faulty connection problems and making installation simpler and faster.

  • The insulation is a high-resistance, self-extinguishing PVC.

  • Easily bent,folded and twisted, flexible busbar improves assembly flexibility, shortening connections and decreasing footprint.

  • Ideal alternative to large cable&rigid busbar.

  • 100% production dielectric tested.

  • ROHS compliant and UL94V-0 standard.


1.Copper layer thickness from 0.5 to 1mm.

2.High flexibility & conductivity ETP grade copper (Cu) with a minimum copper content of 99.90%, can be tin plated on request.

3.Working temperature: -25 up to 105℃ (-13°F up to 221°F).

4.High elongation value and mechanical resistance.

5.High current withstanding capacity and high conductivity.

6.Cross-sectional area: 24mm² to 1200mm².

7.Standard insulation provided: high quality self-extinguishing PVC.

8.Alternative insulation: polyolefin, silicon coating available on request.

9.Holes are punched through the laminated foils and can be round or oblong on request.

IMPORTANT! RHI can also drill or punch holes, form(bend and shape) and custom-cut flexible busbars to any size you need. 

For custom RHIFLEX options please email us [email protected] or call us at+86 15868025551.


Typical Uses

  • Heavy-duty power interconnection

  • Overcome vibration/alignment problems

  • Circuit breaker,generator&prefabricated power network conductor

  • Expansion Joints

  • Variable terminating positions

  • Machine connections

  • Movable connection from massive busbar system

  • Alternative to large&multiple cables

  • Alternative to rigid busbar

Typical Market

  • Switchgear&control equipment

  • Transport

  • Electrical equipment manufacturers

  • Power generation

  • Machinery manufacturer

Why Choose RHI BUSBAR?


1.Strong Manufacturer: We are a professional manufacturer and exporter specialized in design, development and production of flexible copper busbars, rigid copper busbars, aluminium busbars and busbar covers. All products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.

2.Superior Service: We offer the latest customizable jointing solutions for new energy automotive, electrical equipment, power distribution systems and numerous other industry applications. 

24/7 service. We have pre-sales and after-sales to resolved the customer's problems at the earliest.

3.Quality Commitment: We are committed to the highest quality standards. Material is tested before production to guarantee it is ETP grade copper.  All goods are inspected before delivery. We have certificates of ROHS, REACH, UL94V-0, ISO14000 and IATF16949.

4.Advanced Technology : Established in the year 2010,  RHI has 10+ years of experience in designing, manufacturing and testing flexibars and connectors. We have advanced automatic production line, six-axis robot workshop, mold processing center, quality inspection center, laboratory and other advanced equipments.

5. Timely Delivery: Experienced workforce, large production capacity and sound supply chain guarantee timely delivery time for customer.


Industrial & Solution


Electric Vehicle Flexbile Copper Busbars

They are used in car battery pack for battery module connection. 

Made of copper foil thickness from 0.1 to 0.5mm. 

Nickle plated.            

Insulated with PVC coating. 

Insulation temperature resistance: -55℃ to 150℃

Insulation flame retardant: UL94V-0.

Resistance to corrosion: It can pass 240H salt spray test in neutral environment.

Bending Testing: Bend 10000 times in 15 radian angle without breakage or fracture.


Battery Pack Copper Busbar

They are used in car battery module and energy storage system.

Made up of layers of copper foils in various width and number of layers. 

With nickle foils both on top and bottom of busbars.

Insulated with heat shrink sleeve.

Insulation temperature resistance: -55℃ to 150℃

Insulation flame retardant: UL94V-0.


Power Flexible Copper Busbar

They are used for new energy, power distribution, forklift, charging pile, vehicle and so on.

Made up of layers of copper foils in various width and number of layers. 

Tin plated.

Insulated with heat shrink sleeve.

Insulation temperature resistance: -55℃ to 150℃

Insulation flame retardant: UL94V-0.

Flexible busbars can be customized according to customer's design.