Electrical Tri Metal Rivet
Products Description
Electrical Tri Metal Rivets are high-performance electrical contact rivets whose core functions are:
Achieving highly stable current switching;
Reducing contact resistance and the risk of overheating;
Extending the overall lifespan of the contact assembly;
Improving the safety, response speed, and reliability of equipment operation.
With its silver/copper/silver three-layer composite structure, this Trimetal Silver Alloy Copper Contact Rivet achieves a balance between electrical performance and cost control, making it suitable for high-volume industrial applications and projects with medium- to long-term maintenance cost sensitivity.
The inherent advantages of the materials lay the foundation for high-end applications.
Silver Layer (Top/Bottom): Utilising high-purity industrial silver, its conductivity is second only to gold. It also possesses excellent anti-oxidation and anti-sulfurization properties, maintaining surface cleanliness even during long-term operation or in complex environments. This prevents increased contact resistance caused by oxide layers, ensuring stable current transmission. Simultaneously, silver's good ductility allows it to deform with the substrate during riveting, tightly adhering to the connection surface and increasing contact area and connection reliability.
Copper Layer (Intermediate Layer): Copper is one of the copper alloys with the best electrical and thermal conductivity. Its thermal conductivity is several times that of ordinary steel, quickly dissipating heat generated at the riveting points and by electrical components, preventing localised overheating that could affect equipment lifespan. Furthermore, copper's mechanical strength and ductility perfectly match the requirements of riveting processes, ensuring that the Electrical Tri-Metal Rivets are not easily broken or deformed during installation while providing sufficient tightening force to ensure they do not loosen during long-term use.
In-depth Technical Features
Extremely Low Contact Resistance and Temperature Rise
Thanks to the pure silver layer on the surface, its contact resistance is far lower than that of copper or aluminium rivets. When carrying large currents, according to Joule's law (Q = I²Rt), the extremely low R value means that the heat generated is negligible. This directly results in a lower system temperature rise, extending the lifespan of surrounding insulation materials and electronic components.
Superior Resistance to Arc Erosion and Welding Performance
In switching equipment, an electric arc is generated the instant the contacts open and close. The silver layer has excellent resistance to arc erosion, able to withstand thousands of opening and closing impacts while maintaining a smooth surface, effectively preventing contact adhesion (welding) caused by the arc, ensuring the reliability of equipment operation.
Powerful Mechanical Riveting Locking Force
The copper core gives the Trimetal Contact Rivet Point ideal ductility and strength. During automated riveting, the rivet deforms uniformly, forming a strong mechanical interlock. Its vibration and impact resistance far exceeds that of threaded connections, eliminating the risk of loosening due to vibration.
Long-term antioxidant and corrosion-resistant properties
Silver is chemically stable and does not readily react with sulfides in the air to form sulfides that hinder electrical conductivity under normal conditions. Compared to copper, which is easily oxidized and has a non-conductive oxide film, silver surface Tri-Metal Contact Rivets for Micro Switchess ensure stable contact performance for decades, making them particularly suitable for harsh environments such as humid and industrially polluted environments.
Differentiated Advantages Compared to Similar Products on the Market
Compared to common Trimetal Silver Contact Rivet for Contactors on the market, our products have the following significant advantages:
Structural Innovation: Utilizing a triple-layer structure instead of the common double-layer structure, we offer more comprehensive performance advantages and overcome the limitations of single materials.
Material Optimization: Through scientific material combinations, we achieve a perfect balance between conductivity, wear resistance, and cost, avoiding cost increases caused by over-design.
Manufacturing Process: Advanced triple-layer lamination technology ensures product consistency and reliability, avoiding interlayer separation problems common in traditional composite processes.
Application Range: Applicable to a wider range of currents (50A-6300A) and environmental conditions, meeting diverse customer needs.
Performance Stability: Under long-term high-load operation, the performance degradation rate is significantly lower than that of competing products, reducing maintenance costs and improving equipment availability.
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