China Copper-Aluminum Transition Busbar Suppliers - Factory Direct Electrical Connection Solutions
The main materials for Copper-Aluminum Transition Busbar
| Copper end | T2/T3 copper, purity ≥ 99.9% |
| Aluminum end | L3/1060/1070 pure aluminum , purity ≥ 99.6% |
| Surface treatment | The copper end can be optionally plated with tin / silver, and the aluminum end can be optionally treated with passivation / anodization to enhance corrosion resistance. |
Dimensions and Installation Compatibility
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Width/Thickness: Match the width of the busbar trough and the terminal interface size in the switch cabinet, avoiding interference with other components (such as circuit breakers, relays).
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Length: The length of the copper end/aluminum end is customized according to the actual installation distance (conventional copper end 50-150mm, aluminum end 150-300mm), leaving a reserve for thermal expansion and contraction (≥5mm).
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Hole Requirements: Customize precisely according to the hole spacing and diameter of the copper busbar/terminal in the switch cabinet (common hole diameters M8, M10, M12), use laser drilling to ensure accuracy (error ≤ ±0.1mm).
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FAQ For Copper-Aluminum Transition Busbar
Q1
What materials are used for the Copper-Aluminum Transition Busbar?
The copper end uses T2/T3 copper (purity ≥ 99.9%), and the aluminum end uses L3/1060/1070 pure aluminum (purity ≥ 99.6%). The copper end can be optionally plated with tin or silver, and the aluminum end can be treated with passivation or anodization to enhance corrosion resistance.
Q2
What are the key dimension requirements for installation compatibility?
Width and thickness must match the busbar trough and the terminal interface size. Length is customized (conventionally copper end 50-150mm, aluminum end 150-300mm) with a ≥5mm reserve for thermal expansion. Hole spacing and diameters (M8, M10, M12) are customized using laser drilling to ensure an error ≤ ±0.1mm.
Q3
What are the differences between the copper-aluminum adapter and the ordinary copper-aluminum connector?
Ordinary connectors are mostly mechanically crimped, which have gaps and are prone to oxidation and heat generation; the copper-aluminum adapter uses metallurgical bonding technology, achieving molecular-level fusion, with low contact resistance and no oxidation risks, and a longer service life.
Q4
How can one determine the quality of the copper-aluminum adapter?
1. Check the welding process: Friction welding / flash welding are superior to brazing;
2. Measure the contact resistance: ≤ 15 μΩ is considered a high-quality product;
3. Inspect the appearance: no cracks, pores, or oxide scale;
4. Request a test report: including indicators such as conductivity, tensile strength, and corrosion resistance.
2. Measure the contact resistance: ≤ 15 μΩ is considered a high-quality product;
3. Inspect the appearance: no cracks, pores, or oxide scale;
4. Request a test report: including indicators such as conductivity, tensile strength, and corrosion resistance.
Q5
How long does the copper-aluminum adapter last?
Under normal use conditions, the metallurgical-bonded copper-aluminum adapter has a service life of ≥ 30 years, which is much longer than the mechanical connection connectors (3-5 years).
Q6
Can it be used in outdoor or humid environments?
Yes. Choose products with tin-plated / silver-plated surface treatment to enhance corrosion resistance, and combine with protective measures to use them in outdoor and humid environments for a long time.