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CCA busbar is replacing copper busbar for electrode of electrical equipment, industry and building electricity control cabinate, subway and high speed train electricity transmission, It avoids the cooked surface, arcing, overheat, reduces power consumption,has significant economic and practical prospects.
link:https://www.ygmetal.com/clad-metals/copper-clad-aluminum/electrical-cu-clad-al-busbar.html
Electrical Cu Clad Al Bimetal Busbar