Copper Contact Arm
Made from high-purity copper (≥99.9%) with 8–12μm silver plating, copper contact arms offer ultra-low contact resistance (<10μΩ), reducing energy loss by 15–20% compared to aluminum. They are highly resilient, withstanding electromagnetic forces up to 50kN/m² and harsh environments with IP65+ protection. The use of oxygen-free copper (C10300) and silver plating ensures excellent corrosion resistance, offering a service life of over 20 years—making them ideal for high-current (≥4000A) and mission-critical applications.

Aluminum Contact Arm
Aluminum contact arms are 60% lighter than copper, significantly reducing structural load in overhead installations. With 40–50% lower material costs, they offer a cost-effective solution for medium-voltage systems. Anodized surfaces enhance corrosion resistance and prevent galvanic reactions when used with compatible aluminum busbars. These features make aluminum arms well-suited for budget-conscious projects where weight and conductivity requirements are moderate.