Silver Cadmium Oxide Contacts
Products Description
Silver Cadmium Oxide Contacts are sintered composite materials formed by the uniform distribution of highly conductive metallic silver (Ag) and cadmium oxide (CdO) particles. Their unique structure provides excellent resistance to welding during switching and maintains stable mechanical strength and conductivity under high-temperature arc impact.
Applicable equipment includes:
AC and DC contactors
High-load relays
Industrial circuit breakers
Large household appliance control switches
Industrial motor control systems
Automation equipment control modules
Whether for devices requiring frequent switching operations or industrial equipment continuously subjected to high current pressure, AgCdO contacts provide stable performance, reduce contact failures, and extend overall equipment lifespan.
Core Product Features | A Stable Contact System Used in the Industry for Decades
Strong Anti-Welding Capability
Cadmium oxide particles form micro-craters during the switching arc, effectively dispersing heat and preventing contact adhesion, ensuring reliable contact separation even under high load conditions.
01
Excellent Resistance to Arc Erosion
The composite structure makes the contact surface less prone to deep erosion under arc impact, improving contact surface integrity and extending mechanical life.
02
Stable Low Contact Resistance
The silver substrate provides excellent conductive paths, maintaining stable contact resistance even after long-term use, helping to reduce equipment energy consumption and heat generation.
03
Suitable Mechanical Strength and Hardness
The material maintains high conductivity while possessing excellent wear resistance, suitable for medium- and high-frequency switching mechanical structures.
04
Mature System, Controllable Cost
Compared to high-end silver-tin oxide (AgSnO₂) or silver-nickel contacts (AgNi), silver-cadmium oxide offers higher cost-effectiveness in specific operating conditions.
05
Ultimate Performance: Creating Value in Extreme Environments
Superior Arc Erosion Resistance
In frequent switching of high current and inductive loads, its self-cooling and self-repairing properties result in a wear rate far lower than other silver-based oxide contacts, extending its lifespan by several times or even an order of magnitude.
Unparalleled Anti-Welding Properties
The presence of CdO acts like an "infusible substance" in the molten silver pool, effectively preventing fatal contact adhesion even under severe short-circuit current surges, ensuring reliable operation of the protective device.
Stable and Low Contact Resistance
Surface regeneration after each operation ensures that contact resistance does not increase drastically due to changes in material composition over long-term use, avoiding overheating and increased energy consumption.
Deeply Matched to Application Scenarios
High-Capacity Circuit Breakers and Contactors
Our AgCdO contacts offer an ideal performance balance in AC contactors and circuit breakers within the 10A-400A current range. They can withstand frequent operations (up to millions of times), maintain stable contact resistance and reliable breaking capability, making them the preferred solution for industrial control systems.
Automotive Electrical Systems
In increasingly electrified automotive systems, from relays to high-voltage contactors in new energy vehicles, our material formulations are specially optimized to withstand vibration, temperature cycling, and harsh environmental conditions, ensuring the long-term reliability of vehicle electrical systems.
Home Appliances and Power Tools
We offer cost-effective solutions for motor control switches in home appliances and power tools. Contact designs take into account the relatively low current and operating frequencies in these applications, maximizing cost-effectiveness while ensuring performance.
Special Environmental Applications
Through targeted adjustments to the material formulation, our AgCdO contacts can adapt to special environments such as high temperature, high humidity, and corrosive atmospheres. For example, a high-humidity resistant formulation designed for tropical climates, and a corrosion-resistant formulation designed for chemical environments.
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