Products Description
As key conductive components of circuit breakers, contactors, and switches, our Silver Contact Brazed Assemblies use 99.9% pure silver contacts (Ag≥99.9%) combined with copper/brass substrates through the gh-frequency brazing process, providing contact resistance as low as 5mΩ and welding strength ≥80MPa. Applicable to 12V-1,000V medium and low voltage electrical systems, it has passed IATF 16949, ISO 9001, and RoHS/REACH certifications to ensure stable performance in breaking current and high-frequency switching scenarios.
Product Features
High-quality materials and exquisite craftsmanship
High-purity silver is selected as the main material, which has excellent conductivity, low resistance, and good corrosion resistance. Combined with advanced welding technology, such as vacuum brazing, etc., ensure the close combination of Brazing Electrical Contacts and base materials, and improve the overall performance and reliability of the product.
Diverse specifications and sizes
Silver contact welding assemblies of various specifications and sizes can be provided according to different customer needs. Whether it is a small circuit breaker or a large industrial contractor, we can tailor suitable silver contact welding assemblies for it to meet the requirements of various application scenarios.
High cost-effective factory price
We have our factory, and independent production reduces the cost of intermediate links and can provide customers with high-quality products at a very competitive factory price. On the premise of ensuring product quality, help customers effectively reduce procurement costs and improve the market competitiveness of Brazing Silver Contacts to Copper Bars.
Authoritative certification and strict standards
The product has passed ISO9001-2015, IATF16949, ROHS, REACH, and other authoritative certifications, and meets international industry standards. A strict quality control system runs through every link from raw material procurement, production, and processing to finished product inspection, ensuring that every Silver Contact Brazed assembly has excellent quality and safety.
Silver contact performance · Excellent conductivity and wear resistance
| Performance indicators | Technical parameters | Application value |
| Silver purity | 99.9% (ASTM B113) | Conductivity ≥106% IACS, supports 100A high current breaking |
| Arc erosion resistance | No obvious wear after 10,000 breaking tests | Suitable for circuit breaker short-circuit protection (breaking capacity ≥16kA) |
| Operating temperature | -40℃~+150℃ | Stable operation of contactor high-frequency switching (10 times/second) |
Applications
Low-voltage circuit breaker
Molded case circuit breaker (MCCB): φ8mm AgSnO₂ contact assembly is used for 250A circuit breakers, with a breaking capacity of 10kA, and passed the short-circuit test;
Miniature circuit breaker (MCB): φ5mm pure silver contacts support 6kA breaking, suitable for small circuit breakers, life ≥ 10,000 operations.
AC contactor
Industrial motor control: AgNi10 contact components are used for contactors, support 220V/380V voltage, and withstand 1,200 times/hour switching frequency;
New energy charging pile: High temperature-resistant brazing components (temperature resistant 260℃) are used for DC pile contractors.
Smart switches and relays
Smart home switches: φ3mm micro silver contacts (Ra≤0.4μm) for smart wall switches, contact resistance ≤3mΩ, support a touch life of millions of times;
Automotive relays: IATF 16949 certified components for on-board relays, passed the 125℃ high-temperature aging test.
Photovoltaic and energy storage equipment
Photovoltaic DC switches: AgSnO₂In contact components (arc erosion resistant) for 1,500V DC photovoltaic systems, in compliance.
Factory Strengths
1. Vertically integrated production chain
High-frequency brazing production line: 10 fully automatic brazing lines, equipped with infrared temperature monitoring, to achieve zero porosity welding between Silver Contact Brazing on Copper Bars and substrates, with a yield rate of ≥99.5%;
Precision testing center: Equipped with contact resistance tester (resolution 0.1mΩ), tensile testing machine (accuracy ±1N), and 10,000 breaking life tests for each batch.
2. Customized solutions
Material selection support: Freely provide conductive-wear-resistant comparison report of AgNi/AgSnO₂ contacts to assist customers in optimizing cost and performance;
Appearance development capability: Complete the design of special-shaped contact molds (such as contact components with heat dissipation fins) in 7 days, and provide 3D printed sample verification.
3. Strict quality control system
5-layer inspection process:
1. Silver purity analysis: Direct reading spectrometer detects Ag content, impurities ≤0.1%;
2. Welding quality: Ultrasonic flaw detection detects the uniformity of the solder layer and rejects cold soldering;
3. Electrical performance: 100% full inspection of contact resistance and insulation resistance (≥10^12Ω);
4. Environmental testing: Salt spray test (48 hours) and thermal cycle (-40℃~+150℃, 100 cycles);
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