Silver oxide contact materials are manufactured by sintering or internal oxidation and offered high electrical conductivity (72 to 88% IACS). Among these contact materials, AgSnO₂ (silver tin oxide) is widely used in different switching devices due to its excellent arc resistance and durability.
The use of AgCdO (silver cadmium oxide) contact materials has been significantly reduced in many regions as a result of environmental regulations and compliance requirements (REACH / RoHS).
AgZnO (silver zinc oxide) is used in specific electrical contact applications where good anti-welding behavior and stable switching performance are required.
Ideal for industrial contactors and circuit breakers, silver oxide contact materials are able to withstand currents ranging from 10A to 3500A.
Explore our solutions for your critical applications.
Electrical Conductivity
72 à 88% IACS
Performance adapted according to the material chosen for your specific application.
Arc Resistance
Very high performance
Excellent resistance to electric arcs during high intensity cuts.
Rated current
10A à 3500A
Wide range of currents for critical industrial applications.
Hardness
Up to 120 HV
High mechanical resistance ensuring longevity and reliability.
| Alloy Type | Conductivity (IACS) | Hardness (HV) | Typical Applications |
|---|---|---|---|
| AgSnO2 | 70 – 80% | 90 – 120 | Circuit Breakers, Contactors |
| AgZnO | 75 – 85% | 70 – 100 | Switch, Relays |
| AgCdO | ~80% | 60 – 90 | Restricted use (REACH/RoHS) |
Silver tin oxide (AgSnO₂) is one of the most widely used silver oxide contact materials for electrical switching applications.
It is recognized as an environmentally friendly alternative to AgCdO, offering excellent arc erosion resistance, reduced contact welding, and stable electrical performance under high current and frequent switching conditions.
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