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BRIDGOLD Rigid Copper Busbar Insulated with Polyimide Film
BRIDGOLD Rigid Copper Busbar Insulated with Polyimide Film
BRIDGOLD Rigid Copper Busbar Insulated with Polyimide Film
BRIDGOLD Rigid Copper Busbar Insulated with Polyimide Film
BRIDGOLD Rigid Copper Busbar Insulated with Polyimide Film
BRIDGOLD Rigid Copper Busbar Insulated with Polyimide Film

High-Performance Rigid Copper Busbar with Polyimide Film Insulation - China Suppliers & Factory Solutions

The rigid copper busbar with polyimide film (PI) insulation from our China factory offers a superior insulating layer, typically ranging from 0.05 to 0.125 mm in thickness. Designed for high performance, this busbar operates efficiently across a wide temperature range of -70℃ to +260℃ and boasts a UL94 V-0 flame rating. The use of PI film enables laminated installation, allowing for a significant reduction in assembly space, making it ideal for high-density busbar stacks. With outstanding dielectric strength, chemical resistance, and radiation resistance, our copper busbars are extensively used in aerospace, EV battery modules, and precision electronics, ensuring compact size and exceptional reliability. We welcome customization based on your specific drawings. As a leading supplier in the industry, we are committed to delivering quality products tailored to our clients' needs.
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    Product Details

    Product Advantages
    High conductivity copper:

    C11000/C10100 with ≥98% IACS.

    Ultra-thin PI film insulation:

    Thickness only 0.05–0.125mm (customizable), much thinner than dip or extrusion coating, adding almost no extra dimension.

    Laminated installation ready:

    Smooth PI surface allows direct stacking of multiple busbars without additional spacers – significant space saving, ideal for multi-layer busbar assemblies and battery module stacking.

    Excellent temperature range:

    Operating from -70℃ to +260℃, far exceeding PVC, PA12, etc. Suitable for high-temperature environments (motor connections, high-power charging).

    Superior electrical performance:

    Dielectric strength typically >150kV/mm (film state). A single 0.05mm layer withstands >7500V. UL94 V-0 flame rating.

    Chemical & radiation resistance:

    Resists acids, oils, organic solvents, as well as gamma rays and electron beam irradiation – ideal for aerospace and nuclear applications.

    Lightweight & flexible:

    Suitable for dynamic connections requiring bending or vibration.

    Product Display
    Rigid Copper Busbar Insulated with Polyimide Film (1)
    Rigid Copper Busbar Insulated with Polyimide Film (2)
    Rigid Copper Busbar Insulated with Polyimide Film (3)
    Operating Conditions
    Temperature range: -70℃ to +260℃ (PI film)
    Relative humidity: ≤95% non-condensing
    Applications: EV battery packs, aerospace power, high-temperature industrial equipment, precision electronics, nuclear industry, etc.
    Flame rating: UL94 V-0
    Dielectric strength: With single-layer thickness 0.05-0.125mm, withstand voltage 7500V-18000V (AC/DC for 1 minute). Higher for multi-layer stacking. Reports available upon request.
    Maintenance Instructions
    • Inspect PI film surface for scratches, peeling, or damage every 6 months.
    • Clean with dry soft cloth or anhydrous alcohol; avoid strong acids/alkalis.
    • Prevent sharp objects from scratching the film-mechanical damage reduces insulation.
    • Store in dry, dark environment for long-term preservation.
    Service Life

    Designed service life ≥15–20 years (depending on mechanical wear and thermal cycling). PI film itself rarely ages, but sharp burrs on copper edges must be removed to avoid piercing the film.

    After-Sales Service
    Free technical support: Engineering consultation, drawings...
    Custom orders: Lead time & quality report provided before shipment
    Contact Us

    Zhejiang Bridgold Copper Tech Co., Ltd. is a professional leader China copper braided shunt, copper braided ground strap, copper braided connector, Copper Braided Busbar, rigid copper busbars manufacturers and suppliers with high quality and low price. Welcome to contact us.

    Frequently Asked Questions
    What grade of copper is used in these busbars?
    We use high conductivity C11000 and C10100 copper offering ≥98% IACS conductivity for optimal electrical transmission.
    What is the thickness and dielectric strength of the polyimide (PI) insulation?
    The ultra-thin PI film has a thickness of 0.05–0.125mm (customizable) with a dielectric strength typically exceeding 150kV/mm. A single layer withstands voltages from 7500V to 18000V.
    What is the operating temperature range for these insulated busbars?
    The polyimide film insulation operates stably across a wide temperature range from -70℃ to +260℃, making it suitable for high-temperature and extreme environments.
    Can these busbars be directly stacked without additional insulation spacers?
    Yes. The smooth and robust PI film surface allows direct laminated stacking of multiple busbars, significantly saving space in multi-layer busbar assemblies and battery packs.
    What is the expected service life and flame rating?
    The product has a designed service life of ≥15–20 years under proper maintenance and features a UL94 V-0 flame-retardant rating.
    What maintenance is recommended for polyimide insulated busbars?
    We recommend inspecting the film surface every 6 months for scratches or peeling, cleaning with a dry soft cloth or anhydrous alcohol, and storing spare parts in a dry, dark environment.