AgNi contacts: Silver-nickel alloy contacts are a widely used environmentally friendly material with excellent electrical and thermal conductivity and high ablation resistance, making them particularly suitable for controlling resistive loads. However, they have poor surge current resistance, which can easily lead to instantaneous contact adhesion failure if a surge current is present in the circuit.

AgCdO contacts: Silver- Cadmium contacts are still considered to offer the best overall performance. Their unique advantages of good processing and low cost have led to their widespread application. Silver and cadmium oxide contact material are immiscible substances, and cadmium oxide has an excellent arc-extinguishing effect. AgCdO alloys offer excellent resistance to electrical wear and welding, and low and stable contact resistance. They are primarily used in medium- and high-power relays, contactors, and air circuit breakers. Applicable load types include resistive, motor, and inductive loads.

AgSnO2 contacts: Silver-tin oxide alloy is an environmentally friendly material. Tin oxide has high melting and boiling points, giving the alloy excellent resistance to metal transfer and welding.

Due to environmental protection requirements, research on AgSnO2 contact materials has intensified significantly in recent years, resulting in significant progress in AgSnO2 contact composition, processing, material physical properties, and electrical performance. The electrical properties of AgSnO2 contact are comparable to those of AgCdO contact. It is currently a new environmentally friendly alternative to AgCdO. However, due to the high hardness of SnO2, AgSnO2 has two drawbacks:

1.Compared with AgCdO, its contact resistance is higher, resulting in a higher temperature rise;

2.Due to the high hardness of SnO2, AgSnO2 is difficult to form.

Applicable load types: lamp loads, inductive loads, and capacitive loads. Silver alloy + gold-plated (or gold-covered) contacts: AgNi, AgCdO, and AgSnO2 can all be gold-plated (or gold-covered) to protect the contact surface. The gold-plated layer offers excellent corrosion resistance in air. If switching signal loads, a dual-contact structure should be selected for higher contact reliability.

AgNi contacts,Silver-nickel alloy contacts , Silver- Cadmium contacts, AgCdO alloys,AgSnO2 contacts,Silver-tin oxide alloy Silver alloy gold-plated (or gold-covered) contacts