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Flexible Copper Wire Connectors with Insulation - China Suppliers and Factory for Earthing Straps

Our flexible copper wire connectors, manufactured in China, are crafted from high-quality flexible copper braids and stranded fine copper wires, featuring welded ends for optimal contact. These connectors are commonly utilized as earthing straps and are designed to meet the Chinese standard GB/T6313.2-1992 using Cu-ETP wires.

As a leading supplier in the industry, our flexible copper wire connectors can be customized with various insulating materials in different colors, tailored to meet specific requirements such as insulation class, temperature grade, voltage class, and flame retardant rating. Trust our factory for reliable and high-performance solutions for your electrical connection needs.

    Insulating Material Options

    We can provide the following insulating materials for copper braided connectors:
    1. PVC heat-shrinkable tube
    2. PVC cold-shrinkable tube
    3. extruded PVC tube
    4. PVC non-shrinkable tube
    5. extruded TPE tube
    6. glass fiber tube
    7. silicone rubber tube
    8. silicone rubber glass fiber tube
    9. silicone rubber heat-shrinkable tube

    Each insulation type can be supplied in different colors (e.g., black, red, yellow, green, blue) and thicknesses according to your application.

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    Additional Material Information

    Base conductor: Annealed Cu‑ETP wires (C11000, copper content ≥99.95%), braided per GB/T6313.2-1992.

    End termination: Welded and hot-dip tinned for secure, low-resistance contact.

    Insulation materials: PVC (general purpose), TPE (flexible & halogen-free), glass fiber (high temperature), silicone rubber (flexible & high temp), silicone rubber + glass fiber (mechanical & thermal protection).

    Technical Data (Typical)

    Single wire diameter: 0.05 mm – 0.254 mm (AWG 44 to 30), default 0.15 mm.

    Cross sectional area: 1.5 mm² – 6000 mm²(Copper Braided Connectors);
    1.5 mm² – 2000 mm²(Copper Stranded Connectors).

    Temperature range with insulation: depends on material

    Voltage rating with PVC insulation: 600V to 1500V (depending on wall thickness and grade). For silicone/glass fiber, higher ratings are available.

    Operating Conditions

    Suitable for indoor and outdoor applications with appropriate insulation.

    Withstands vibration, flexing, and moderate chemical exposure depending on insulation choice.

    Flame retardant ratings available (e.g., UL94 V-0 for PVC and silicone).

    Do not exceed maximum continuous operating temperature of the selected insulation.

    Maintenance & Service Life

    Maintenance: Periodically inspect insulation for cracks, abrasion, or discoloration. Clean with a dry cloth or mild detergent – avoid solvents that may damage the insulation.

    Service life: Base copper braid >20 years under normal conditions; insulation life varies by material.

    Replace when: Insulation becomes brittle, cracked, or melted; copper braid shows severe oxidation or broken strands.

    After-Sales Service

    Free technical support: engineering consultation, drawings...

    Custom orders: lead time & quality report provided before shipment

    Ordering Information

    When placing an order, please specify:

    Cross sectional area and length (L)

    Insulation type and color

    Temperature / voltage / flame retardant class required

    End termination type (welded & tinned as standard)

    Single wire diameter (default 0.15 mm)

    Contact Us

    Zhejiang Bridgold Copper Tech Co., Ltd. is a professional manufacturer and supplier of copper braided connectors, earthing straps, shunts, and busbars with high quality and competitive price. Welcome to contact us.

    Frequently Asked Questions (FAQ)

    What materials are used for copper braided connectors?
    The base conductor is made of high-purity annealed Cu-ETP wires (C11000, copper content ≥99.95%). Various insulation options are available including PVC, TPE, silicone rubber, and glass fiber.
    Can I customize the insulation type and dimensions?
    Yes, custom specifications are fully supported. You can specify the cross-sectional area, length, single wire diameter, insulation material, thickness, and color (such as black, red, yellow, green, or blue) to fit your application.
    What is the rated voltage range for these insulated connectors?
    With standard PVC insulation, the voltage rating typically ranges from 600V to 1500V depending on the wall thickness and grade. Higher voltage ratings can be achieved using silicone rubber or glass fiber insulation.
    How should insulated copper braided connectors be maintained?
    Periodically inspect the outer insulation for cracks, discoloration, or wear. Clean surfaces using a dry cloth or mild detergent while avoiding chemical solvents. If the insulation melts/cracks or copper shows severe oxidation, replacement is recommended.
    What is the expected service life of the copper braided connector?
    Under normal operating conditions, the base copper braid has a service life of over 20 years. The durability of the insulation will depend on operating temperatures, mechanical stress, and ambient environmental exposure.