Product Introduction
Contactor contacts are core conductive components used in AC contactors, relays, circuit breakers, and low-voltage switchgear. They are primarily manufactured using silver-based electrical contact materials such as AgNi (silver nickel), AgSnO₂ (silver tin oxide), AgCdO (silver cadmium oxide), AgCu (silver copper), and AgW (silver tungsten). They are widely used in industrial control, power distribution, new energy, electric vehicles, rail transportation, and home appliances.
Technical Parameters
|
Product Name |
Contactor/Contact Tips |
|
Material Type |
AgNi10~20, AgSnO₂10~15, AgCdO10~15, AgCu, AgW |
|
Product Structure |
Solid contact, bimetallic contact, three-layer composite contact, riveted contact, welded assembly |
|
Rated Current |
10A~800A |
|
Diameter Range |
2.0mm~25.0mm |
|
Thickness Range |
0.5mm~10.0mm |
|
Dimensional Tolerance |
Controllable to ±0.02mm (depending on product specifications) |
|
Hardness Range |
HV50~HV130 |
|
Conductivity |
65%~90% IACS |
|
Contact Resistance |
≤100μΩ |
|
Electrical Life |
50,000~1,000,000 cycles (depending on operating conditions) |
|
Environmental Requirements |
RoHS, REACH |
|
Testing Documents |
COA, Material Certificate, Third-Party Test Report (provided upon request) |
Product Features
Low Contact Resistance: Utilizing high-purity silver-based materials, optimized microstructure and processing techniques effectively reduce contact resistance, minimizing energy loss and temperature rise.
Anti-Arc Erosion Resistance: Materials such as AgSnO₂ and AgNi possess strong resistance to arc erosion, reducing contact burn-off during frequent switching.
Anti-Welding Performance: Optimized material structure for motor starting and frequent start-stop operations effectively reduces the risk of contact adhesion under high-current impact conditions, improving equipment operational safety.
High Dimensional Accuracy: Employing precision stamping, cold heading, and composite processing techniques, strict dimensional consistency is controlled to meet the requirements of automated production such as automatic welding and robotic assembly.
Cadmium-Free Environmental Solution Available: Cadmium-free materials such as AgSnO₂ and AgNi are available, complying with RoHS and REACH regulations.
Manufacturing Process
Raw Material Control: High-purity silver, copper, nickel, and tin oxide are selected as raw materials. All incoming materials undergo composition analysis and quality inspection to ensure material stability and reliability.
Smelting Process: Vacuum melting or protective atmosphere melting processes are employed to improve material density, reduce porosity and inclusions, and enhance electrical conductivity and microstructure uniformity.
Rolling and Powder Metallurgy: Depending on the material system, multi-pass rolling, powder metallurgy sintering, or internal oxidation processes are used to improve the material microstructure and enhance ablation resistance.
Precision Forming: Capable of cold heading, precision stamping, composite riveting, and welding, processing various standard and non-standard structural products.
Controlled Atmosphere Annealing: Continuous protective atmosphere annealing is used to eliminate processing stress, optimize material microstructure, and improve mechanical and electrical properties.
Online Inspection: Dimensional inspection, contact resistance testing, hardness testing, and metallographic analysis are implemented during production to ensure consistent product quality.
Packaging and Protection: We use moisture-proof and oxidation-proof packaging methods and can provide vacuum packaging, OEM packaging, and customized labeling services according to customer needs.
Application Areas
|
Industrial Automation |
AC contactors, relays, magnetic starters |
|
Power Distribution |
Low-voltage switchgear such as ACB, MCCB, and MCB |
|
New Energy |
Energy storage contactors, photovoltaic inverters |
|
Electric Vehicles |
High-voltage DC relays |
|
HVAC |
Compressor starters, air conditioning contactors |
|
Rail Transit |
Auxiliary power supply systems, control equipment |
|
Home Appliances |
Motor controllers, protective switches |
Why Choose Us?
Focusing on Silver-Based Electrical Contact Material Manufacturing
We have long been dedicated to the R&D and production of silver-based electrical contact materials and contact products, accumulating rich experience in industry applications.
In-House Manufacturing Throughout the Entire Process
We possess capabilities in smelting, rolling, stamping, composite processing, welding, and testing, achieving full-process quality control.
Strict Quality Management
We have established a comprehensive quality management system and support the provision of Certificates of Authorization (COA), material certificates, and third-party testing reports.
Flexible Delivery Capabilities
We support sample development, small-batch trial production, and mass production, meeting customers' procurement needs at different stages.
Extensive Export Support Experience
We are familiar with international regulations such as RoHS and REACH, and can assist customers in preparing export compliance documents.
Frequently Asked Questions
Q: Do you support small-batch sampling?
A: Yes. The sample quantity can be determined through negotiation based on product structure, material type, and project requirements.
Q: Can you provide cadmium-free environmentally friendly materials?
A: Yes. Materials such as AgSnO₂ and AgNi comply with RoHS and REACH requirements, meeting the environmental procurement needs of the European and American markets.
Q: Can you develop products based on samples?
A: Yes. Customers can provide samples or technical drawings, and we can conduct component analysis, performance evaluation, and process matching to assist in product development.
Q: Can you provide quality documents for each batch of products?
A: We can provide COA, material certificates, dimensional inspection reports, and third-party testing documents according to customer requirements.
Q: Do you support customer factory visits or third-party audits?
A: Yes, we welcome customers to visit our factory and can cooperate with third-party organizations in conducting audits.
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