Brazed Contact On Terminal
Products Description
Brazed Contact on Terminals are composite electrical contact components. Their core structure includes:
A highly conductive metal terminal substrate
A silver-based or silver alloy electrical contact material
A brazing transition layer (forming a stable metallurgical bond)
By precisely controlling the brazing filler metal composition and the soldering window, a continuous bonding interface is formed between the contact material and the terminal at the microscopic level, thereby avoiding risks such as incomplete soldering, desoldering, or abnormal local resistance.
This structure balances mechanical strength and electrical performance, making it particularly suitable for mass-produced electrical products with high reliability and consistency requirements.
Product Nature and Core Features
Robust Integrated Brazing Structure
Utilizing a high-temperature brazing process, the Silver Contact Brazing is fused to form a metallurgical bonding layer. The connection strength far exceeds that of riveting and adhesive bonding processes, capable of withstanding the vibrations and impacts of frequent switching on and off of medium and low-voltage electrical appliances, eliminating risks such as contact detachment and poor contact.
Synergistic Characteristics of Superior Materials
The Contacts are made of high-purity silver or silver alloy materials suitable for medium and low voltage scenarios, while the terminals are made of highly conductive copper or copper alloy materials. The synergistic effect of these two superior conductive materials ensures smooth current transmission and extremely low and stable contact resistance.
Full-Scenario Adaptability for Medium and Low Voltage Electrical Appliances
Covering different specifications of sizes, terminal models, and rated current levels, it can precisely match the structural design and performance requirements of various medium and low voltage electrical appliances such as circuit breakers, contactors, and switches, adapting to the full range of medium and low voltage levels.
High stability of operation
The brazed connection has excellent sealing and firmness, which can effectively resist the influence of complex working conditions such as humidity, dust, and temperature fluctuations. At the same time, Contact has excellent resistance to electric arc erosion and wear resistance, ensuring the long-term stable operation of medium and low voltage electrical appliances.
Main Functions: Multiple Protections for Electrical Systems
Current Carrying and Switching
This is the primary function. Copper terminals are responsible for the stable transmission of hundreds or thousands of amperes of current, while also being responsible for safely cutting off or closing the circuit at the moment of mechanical action, withstanding the intense erosion of the electric arc.
Heat Conduction and Dissipation
The high temperature generated by the electric arc must dissipate rapidly. conducts heat quickly, and copper terminals are excellent conductors of heat (compared to insulators). The tight bond of the brazed interface ensures that heat is conducted from the contact core to the outside of the terminal in milliseconds, preventing the contacts from melting.
Mechanical Connection and Support
Copper terminals provide robust physical support for connecting external wires (via screw crimping or insert connection). Projection Welding Silver Contacts are securely "grown" onto the terminal through brazing, resisting the enormous mechanical impact of switching actions.
Material Advantages: Scientific Material Selection as the Foundation
Our Resistance Seam Welding Silver Contacts utilize a variety of material combinations flexibly tailored to different application scenarios:
Silver Contact Materials: We offer pure silver (Ag), silver tin oxide (AgSnO2), silver nickel (AgNi), silver cadmium oxide (AgCdO), etc. For circuit breakers, we recommend AgSnO2 due to its excellent resistance to soldering; for contactors, AgNi or AgCdO offer better resistance to arc wear.
Terminal Materials:
Red Copper (ETP/C11000): Conductivity > 98% IACS, suitable for applications with extremely stringent voltage drop requirements.
Brass (H62/C3604): High strength, corrosion resistance, and low cost; commonly used in general-purpose air switches.
Soldering Material: We use silver-based solders (such as BAg72Cu), which have a moderate melting point, good fluidity, and excellent conductivity.
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