AgC contact (silver-graphite contact) is a premium electrical contact material that combines the exceptional electrical and thermal conductivity of silver with the self-lubricating and anti-welding properties of graphite. At Sino-1 Electrical, we manufacture high-quality silver-graphite contacts using advanced extrusion processes, resulting in components with superior performance and extended service life.
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Our AgC electrical contacts are engineered to meet the rigorous demands of low to medium current applications requiring frequent switching operations. The unique composite structure of our silver-graphite materials provides excellent arc resistance, low contact resistance, and minimal temperature rise, making them ideal for critical electrical systems. We offer both vertically structured and parallel-structured silver-graphite contact materials to suit different application requirements.
Parameter | Details |
Material Composition | Silver matrix with graphite particles (3% × 20% graphite content) |
Manufacturing Process | Advanced extrusion technology |
Available Structures | Vertical structure, parallel structure |
Graphite Content Options | Low (3% × 8%), Medium (8% × 10%), High (10% × 20%) |
Key Performance Features | Excellent anti-welding performance, low and stable contact resistance, minimal temperature rise, self-lubricating properties |
Current Rating Range | Low to medium current applications |
Operating Temperature | Up to 180°C continuous |
Contact Resistance | < 1 mΩ (typical) |
Customization Options | Custom dimensions, shapes, and material compositions |
Quality Standards | RoHS compliant, REACH compliant |
Our extrusion-manufactured AgC contacts exhibit exceptional anti-welding properties, preventing contact fusion even under high inrush current conditions. This significantly reduces maintenance costs and extends the service life of electrical equipment.
We offer both vertical and parallel-structured silver-graphite contacts. The parallel-structured version features a denser microstructure, particularly beneficial for large-sized contacts, and provides improved electron flow characteristics compared to conventional vertical structures.
We provide custom AgC contact formulations with graphite content ranging from 3% to 20%. Higher graphite content enhances self-lubrication and anti-welding properties, while lower graphite content offers better electrical and thermal conductivity.
Every silver-graphite electrical contact undergoes strict quality control testing, including dimensional inspection, contact resistance measurement, and material composition analysis. Our manufacturing processes ensure consistent performance across production batches.
Auxiliary contacts in contactors and relays
Low to medium current main contacts in circuit breakers
AC motor control circuit contacts
Home appliance control switches
DC motor commutator brushes
Traction motor brushes
High-speed motor components
Low-noise electrical equipment
Signal contacts in precision instruments
Micro-switch contacts
Low-current switching components
High-sensitivity electrical devices
Subway and light rail vehicle auxiliary circuit contacts
Textile machinery electrical control contacts
Printing machinery switch components
Vibration-resistant electrical systems
Parallel-structured AgC contacts have a denser microstructure and altered electron flow path compared to vertical-structured contacts. They offer improved performance, especially in large-sized contact applications, and provide better anti-welding properties.
For low-current, high-frequency switching scenarios, we recommend high graphite content (10% × 20%) for superior self-lubrication and anti-welding. For medium-current, low-frequency applications, low graphite content (3% × 8%) provides better electrical and thermal conductivity.
Yes, we can produce AgC contacts in custom dimensions and shapes according to your drawings. Our engineering team can also provide design recommendations to optimize contact performance.
Standard lead times are 2-3 weeks for production quantities. For custom designs requiring tooling, lead times may extend to 4-6 weeks. We also offer expedited production options for urgent orders.
Looking for reliable AgC electrical contacts that deliver exceptional performance in demanding applications? Contact our technical team today to discuss your specific requirements. We provide free material recommendations, custom design support, and competitive pricing for all your silver-graphite contact needs. Partner with Sino-1 Electrical for high-quality electrical components that ensure the safety and reliability of your products.
