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Application
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- Low-Voltage Electrical (Electric Brush Wires）
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High-Quality Copper-Aluminum Composite Rigid Busbars from China Suppliers and Factory for Energy Storage and EV Applications
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 the composition of copper-aluminum composite rigid busbars?
It features a bimetallic structure consisting of an aluminum core with metallurgical-bonded copper cladding (approximately 20% copper by volume ratio), combining copper's superior conductivity and corrosion resistance with aluminum's lightweight benefits.
How does the electrical performance compare to pure copper busbars?
The composite busbar offers a conductivity of 69.5% IACS and achieves 85% to 86% of the current-carrying capacity of an equivalent pure copper busbar under standard operating conditions.
What cost and weight savings can be expected?
With a density of only 37% to 40% of pure copper, it provides approximately 55% weight reduction for the same volume, cuts raw material costs by around 35%, and yields over twice the length per unit weight compared to pure copper.
Can the composite busbar withstand machining and bending without peeling?
Yes. Due to high metallurgical bond strength, it supports 90° bending, punching, and shearing without delamination. The stable transition layer also effectively prevents galvanic corrosion.
What are the primary application fields and operating limits?
It is engineered for voltages between 1kV and 35kV and currents from 250A to 5000A, operating continuously from -40℃ to +105℃ (short-term up to 150℃). Typical applications include LV/MV distribution, busways, EV battery busbars, PV inverters, and energy storage systems.
What is the estimated service life and maintenance requirement?
The designed lifespan is ≥25 years. Routine maintenance simply involves periodic torque verification, surface checks, and wiping with a dry cloth while avoiding acid or alkaline cleaners.