Products Description
Copper Bar Silver Contact Attachments are critical parts found in relays, switches, contactors, and circuit breakers. By fusing high-conductivity silver contacts to high-strength copper bars through advanced welding, we create an electrical interface that is both highly efficient and mechanically robust. Since 1990 we have specialized in the design, R&D, and production of contacts, riveting, welding, and precision stamping, delivering proven, high-performance contact solutions to customers worldwide.
Product Features and Functions
Low Contact Resistance
The contact surface is precision-polished, combined with the Silver Soldering Assemblies process, ensuring that the contact resistance remains stable at the micro-ohm level, effectively reducing power loss and heat generation.
Arrow Erosion Resistance
The Brazing Contacts for MCCB silver contacts possess excellent resistance to arc erosion, maintaining a smooth surface even under high-frequency switching scenarios, preventing equipment failure due to contact deformation.
Strong Mechanical Stability
The copper substrate uses high-purity electrolytic copper, precision-stamped, possessing excellent mechanical strength and fatigue resistance, capable of withstanding vibration and impact under complex operating conditions.
Environmental Corrosion Resistance
The surface plating and passivation treatment of the Silver and Copper Welding Button Contact resists corrosion from harsh environments such as humidity and dust, ensuring stable operation over a wide temperature range of -40℃ to 125℃.
High-Precision Welding Processes
Resistance Butt Welding
By precisely controlling current, pressure, and time, the silver contacts and copper strip end faces are fused together to form a strong metallurgical bond.
Copper Spot Welding
For Brazing Contacts for MCCB applications requiring side or localized welding, spot welding technology is used to achieve efficient, locally strong bonding.
Welding Parameter Optimization
Welding current, pressure, and time are optimized based on material thickness and the shape of the welding electrical silver contact tip assembly to ensure high weld strength, low resistance, and aesthetically pleasing appearance.
Automated Welding Workstations
Using robots or dedicated welding machines, the welding process is automated, ensuring good consistency and high production efficiency for Copper Bar Silver Contact Attachments.
Frequently Asked Questions
Can you customize products based on our drawings or samples?
Of course. We offer comprehensive OEM/ODM services, designing, prototyping, and producing according to your drawings, samples, or specific requirements. Free samples are typically available for testing and verification within 7 days.
How do you guarantee product performance in high-temperature or corrosive environments?
We enhance the high-temperature resistance and corrosion resistance of our Brazing Silver to Copper products through material selection (such as high-purity silver, oxygen-free copper), surface treatment (nickel plating, tin plating, etc.), and post-weld heat treatment. Furthermore, we can provide environmental simulation test reports to verify the product's reliability under specific conditions.
What is the typical delivery time?
The standard delivery time for orders is 7-15 days. For expedited orders, we can arrange a fast-track production line to minimize delivery time. The specific timeframe will be clarified upon order confirmation.
How does your welding process ensure weld strength and conductivity?
We use resistance butt welding (RSW) and copper spot welding (CW) technologies. By precisely controlling current, pressure, and time, metallurgical bonding occurs between silver and copper at the interface. The resulting weld has low interface resistance and high strength, and each product undergoes 100% testing to ensure it meets standards.
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