Premium High-Voltage Custom Insulated Copper Busbars

Short Description:

Product Specifications
Name： High-Voltage Insulated Custom Busbar
Standard： IEC 61439, UL 508A, ASTM B187 (Copper Base), RoHS Compliant, REACH Compliant
Material： C11000 Pure Copper or Aluminum Base with High-Voltage Insulation (PVC / Epoxy / Silicone)
Surface： Precision Machined Copper/Aluminum + Uniform Insulation Coating
Width： 20mm – 300mm
Thickness： 3mm – 20mm
Length： 500mm – 6000mm (fully custom shapes, bends, and hole patterns available)
Product Features:
High-voltage insulation for safe operation up to 35kV · Excellent electrical conductivity with low resistance · Superior mechanical strength and vibration resistance · Custom design for perfect fit in compact cabinets · Outstanding thermal dissipation and corrosion resistance · Easy installation with pre-formed bends and holes · Long service life in harsh industrial environments
Application Field:
Medium and high-voltage switchgear cabinets, New energy vehicle battery packs and inverters, Power distribution panels and MCCs, Renewable energy substations, Industrial automation control systems, Data center high-power rails, Railway and marine electrical equipment

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High-Voltage Insulated Custom Busbar – Process & Quality Assurance Statement
Our high-voltage insulated custom busbars are engineered to provide safe, efficient power transmission in demanding high-voltage environments, combining premium conductive metal with reliable insulation for maximum safety and performance.

Key process features

Production integrates precision metal forming with advanced insulation application:

●Base Material Forming: High-purity copper or aluminum is rolled/extruded into precise flat bars with tight dimensional control.
●Custom Fabrication: CNC punching, bending, and drilling create exact hole patterns and shapes per customer drawings.
●Surface Preparation: Thorough cleaning and activation ensure optimal adhesion for the insulation layer.
●Insulation Application: High-voltage grade insulation (PVC extrusion, epoxy powder coating, or silicone sleeving) is applied in controlled thickness for consistent dielectric strength.
●Curing & Testing: Insulation is cured under precise temperature and time control, followed by high-voltage withstand testing.
●Final Finishing: Edges are smoothed and protective caps applied where needed.
●Secure Packaging: Busbars are individually wrapped and crated to prevent damage during global shipping.

Quality control system

● Full traceability from raw metal to finished insulated busbar
● Test reports including conductivity, insulation thickness, and high-voltage withstand data provided with every shipment
● Sample retention ≥3 years for third-party verification (SGS, BV, TÜV, etc.)
● 100% inspection of essential parameters:
• Metal purity and conductivity (eddy current testing)
• Insulation thickness and uniformity (ultrasonic and micrometer measurement)
• High-voltage dielectric strength (AC/DC withstand test up to rated voltage)
• Dimensional accuracy (CMM and laser gauges; typical tolerance ±0.2mm)
• Bond strength and surface quality (visual, adhesion, and thermal cycling tests)
● Internal standards exceed IEC 61439 and UL 508A requirements. Typical performance:
Insulation withstand ≥35kV, Excellent thermal dissipation, Strong mechanical integrity under vibration and thermal cycling.
● ISO 9001:2015 certified production ensures every high-voltage insulated custom busbar delivers the safety, efficiency, and reliability your critical power systems demand.