Multi-Layer Insulated Busbars

Applications & Functions

Our multi-layer insulated busbars (low-inductance laminated power distribution assemblies and multi-tier insulated conductor stacks) are engineered specifically to provide ultra-compact, high-voltage power routing with minimal parasitic inductance. Manufactured by thermal-laminating multiple conductive copper or aluminum plates with high-dielectric insulation films (PET, Nomex, or Kapton) and integrating multi-axis CNC terminal milling, these layered busbars eliminate wiring clutter and voltage spikes across fast-switching power electronics circuits.

They are extensively utilized across various high-frequency, EV, and high-density power electronics sectors:

• EV Traction Inverters & SiC/IGBT Modules: Serves as critical low-inductance DC-link connectors linking capacitors, IGBT/SiC power stages, and traction motors in electric vehicles.

• Solar & Wind Grid-Tie Inverters: Ideal for high-efficiency power conversion units, commercial solar central inverters, and renewable energy storage hubs.

• Industrial Variable Frequency Drives (VFDs): Functions as high-reliability internal power distribution backplanes inside heavy-duty motor drives and automation cabinets.

• Data Center Power Distribution & Supercomputers: Highly suited for high-density power supply units (PSUs), rack-level power distribution systems, and UPS backup stations.

Outstanding Product Features

• Ultra-Low Stray Inductance Architecture: Multi-layer parallel flat plate design creates high capacitive coupling that naturally cancels magnetic fields, eliminating voltage spikes and protecting sensitive IGBT/SiC switching modules.

• High-Dielectric Laminated Insulation: Bound with premium dielectric insulating layers, offering high breakdown voltage ratings, low partial discharge, and flame-retardant performance (UL 94 V-0 rated).

• Precision CNC Terminal Machining: Contact pads, mounting holes, and countersinks are secondary CNC-milled to achieve exact dimensional tolerances (+/-0.01 mm) and ultra-flat surface contact.

• Compact High-Density Spatial Design: Replaces bulky wiring harnesses with a flat, space-saving sandwich structure, significantly improving heat dissipation airflow and power density inside electronic enclosures.

• Anti-Oxidization Surface Plating: Terminal tabs are available with tin, nickel, or silver plating to ensure minimal electrical contact resistance and long-term protection against ambient corrosion.

Why Choose Us? 10+ Years CNC Machining Expertise

We operate as an all-around direct source manufacturer  with over 10 years of professional CNC machining and high-precision mechanical component manufacturing experience.

• Direct Factory Price Advantage: Source your multi-layer insulated busbars, laminated shunts, heat sink bases, and electrical hardware directly from our production workshop to eliminate trading company markups and maximize your procurement margins.

• All-Around Hardware Fabrication Facility: As a comprehensive, all-around production facility, we process a diverse range of high-performance materials including iron, stainless steel, copper, bronze, titanium alloys, and aerospace-grade aluminum alloys to meet exact engineering specifications.

• Bespoke OEM/ODM Turnkey Customization: We machine custom multi-layer busbars, solid copper busbars, flexible connections, and structural hardware tailored precisely to your CAD/3D STEP models. You can specify layer counts, dielectric insulation materials, terminal geometries, surface platings, and localized laser logo markings.

• Advanced Multi-Axis CNC Milling & Lamination Capabilities: Our facility is equipped with state-of-the-art CNC milling centers, vacuum thermal lamination presses, automated profiling equipment, and precision drilling machinery capable of maintaining tight tolerances.

• Rigorous Quality & Dielectric Testing: Every single production batch undergoes severe CMM dimensional audits, high-voltage Hipot dielectric testing, capacitance/inductance validation, and contact resistance checks to guarantee out-of-the-box installation reliability.