China Copper Aluminium Transition Bar Factory - High-Quality Electrical Connection Solutions from Trusted Suppliers
Key Features
Bimetallic Composite Technology
Integrated explosion welding / friction welding process, tight combination of copper and aluminum, no cracking, no delamination.
Excellent Electrical Conductivity
High-purity raw material ensures low resistivity, strong over-current capacity, reduce heat generation and energy loss.
Anti-corrosion & Durable
Surface treated with tin plating / natural oxidation protection, anti-oxidation, anti-galvanic corrosion, adapt to harsh working environment.
Custom Support
Customizable size, thickness, hole distance, drilling, bending and surface treatment according to drawings.
High Mechanical Strength
Good toughness and structural stability, not easy to deform, easy for installation and wiring.
Product Parameters
Material: T2 Copper + 1060/6063 Aluminum
Processing Technology: Explosion welding / friction welding compound
Surface Finish: Bare / Tin Plated / Nickel Plated
Working Temperature: -40℃ ~ +125℃
Application: High current connection, power distribution, new energy, electrical cabinet
Certification: ISO quality standard compliant
Custom Service: OEM & ODM available
Application Scope
Packaging & Delivery
Frequently Asked Questions
Q
What is a copper aluminium transition bar and why is it needed?
A copper aluminium transition bar is a bimetallic connector that bridges copper and aluminium busbars or cables. It is essential for preventing galvanic corrosion and contact resistance issues that occur when copper and aluminium are connected directly, ensuring safe and efficient electrical transmission.
Q
What welding process is used to bond the copper and aluminium layers?
We use explosion welding and friction welding technologies. Both methods create a metallurgical bond between copper and aluminium at the atomic level, resulting in a joint that is free from cracking, delamination, or air gaps — ensuring long-term reliability under high current loads.
Q
What surface finish options are available?
We offer three surface finish options: bare (natural), tin plated, and nickel plated. Tin plating is the most popular choice as it provides excellent anti-oxidation performance and improves contact conductivity. The right finish depends on your working environment and application requirements.
Q
Can the transition bar be customized to specific dimensions or shapes?
Yes. We fully support OEM and ODM services. Customers can provide drawings or specifications for custom size, thickness, hole distance, drilling pattern, bending angle, and surface treatment. Our engineering team will review and confirm feasibility before production.
Q
What is the minimum order quantity (MOQ) and lead time?
The MOQ is 10 pcs for standard custom shapes and 5 pcs for prototypes (negotiable based on project requirements). Lead time is typically 5–7 business days for simple shapes and 7–15 business days for complex profiles. Rush orders can be discussed case by case.
Q
What industries and applications are these transition bars suitable for?
Our copper aluminium transition bars are widely used across multiple industries including power distribution cabinets, low-voltage switchgear, new energy storage systems, PV photovoltaic systems, UPS and inverter equipment, industrial automation, transformers, box substations, railway systems, and communication power supply infrastructure.