Recommended Contact Materials for Various A.C. Switches
| Kinds of A.C. Switches | Specifications | Recommended Contact Materials |
|---|---|---|
| Molded Case Circuit Breakers (MCCB) | Interrupting Capacity (IC) > 10KA | AgSnO₂, AgW, AgMo, AgC, AgZnO, AgCdO |
| Interrupting Capacity (IC) > 25KA | AgSnO₂, AgW, AgWCC+AgWC, AgC+AgNi, AgCdO | |
| Interrupting Capacity (IC) > 150KA | AgWCC+AgWC, AgC+AgNi | |
| Magnetic Contactors | Rated Current: 5A ~ 15A | AgNi, AgCdO |
| Rated Current: 15A ~ 50A | AgSnO₂In₂O₃, AgCdO+σ | |
| Rated Current: > 50A | AgSnO₂In₂O₃, AgCdO+σ | |
| Auxiliary Contact | Ag, AgNi | |
| Relays | Rated Current: < 5A | Ag, AgNi, AgCdO |
| Rated Current: 5A ~ 10A | AgNi, AgSnO₂, AgCdO | |
| Rated Current: > 10A | AgSnO₂In₂O₃, AgCdO | |
| Thermostats (Thermal Switches) | - | Ag, AgNi, AgSnO₂, AgCdO |
| Push Button Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
| Select Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
| Limit Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
| Micro Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
| Medium Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
| Lever Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
| Oil Switches | - | CuW |
| Other A.C. Switches | - | Ag, AgNi, AgSnO₂, AgCdO |
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