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Copper-Aluminum Composite Rigid Busbars from China Suppliers | High Conductivity, Lightweight, Cost-Effective Factory Solutions
Product Advantages
Aluminum core with copper cladding (copper volume ratio ~20%) via metallurgical bonding, offering copper’s conductivity and oxidation resistance combined with aluminum’s low weight and cost.
Conductivity 69.5% IACS, current-carrying capacity 85%~86% of equivalent copper busbar; surface tin-plating available for enhanced anti-oxidation.
Density 37%~40% of pure copper, weight reduction ~55% at same volume, material cost savings ~35%, and 2+ times length per unit weight compared to copper.
High bond strength allows 90° bending, punching, shearing without delamination; stable transition layer minimizes galvanic corrosion.
Product Display
Operating Conditions
Temperature: -40℃~+105℃ (long-term), short-term up to 150℃; voltage 1kV~35kV, current 250A~5000A.
Applications: LV/MV distribution, busway, EV battery busbars, PV inverters, energy storage – ideal replacement for pure copper/aluminum.
Maintenance
Inspect torque and surface oxidation regularly; clean with dry cloth, avoid acids/alkalis.
Designed life: ≥25 years.
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 (aluminum) busbars, extruded copper(aluminum) busbars, copper-aluminum composite rigid busbars manufacturers and suppliers with high quality and low price. Welcome to contact us.
Frequently Asked Questions
What is a copper-aluminum composite rigid busbar?
It is a bimetallic conductor consisting of an aluminum core clad with copper (approx. 20% copper volume ratio) through metallurgical bonding. It combines the high conductivity and corrosion resistance of copper with the light weight and low cost of aluminum.
How does the electrical performance compare to solid copper busbars?
It delivers a conductivity of 69.5% IACS and achieves 85% to 86% of the current-carrying capacity of an equivalent pure copper busbar, making it an efficient and practical conductor alternative.
What cost and weight savings can be expected?
The density is only 37%~40% of pure copper, reducing total weight by about 55% at the same volume. It lowers raw material costs by roughly 35% while yielding more than twice the length per unit weight compared to copper.
Can these composite busbars be bent and punched without delamination?
Yes. Due to high metallurgical bond strength, the composite busbars can easily undergo 90° bending, punching, and shearing without delamination, while the stable transition layer prevents galvanic corrosion.
What are the main application areas for composite busbars?
They are widely applied in low-voltage and medium-voltage distribution systems, busway systems, EV battery pack connections, photovoltaic inverters, and energy storage systems.
What is the expected operating life and maintenance routine?
The product has a designed service life of ≥25 years. Routine maintenance simply requires periodic checks on fastener torque and surface oxidation, as well as keeping the surface clean with a dry cloth.