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Yes, if you have enough of them! The points where the electrical connection is made typically uses a silver alloy button with roughly 50% silver. If silver is at $15/ounce, you would need quite a of these "buttons" to be worthwhile to recover. Do the math!

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15y ago

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How do you salvage the silver in electrical contacts?

If you disassemle the a/c electric motor starter/contactor. You can find the contact points. In most cases the contact will also have a lug, or screw terminal that is cast in the same material as the contact surface itself. I've recently salvaged 36 grams of silver alloy from a 1 hp electric motor starter. I dont know the actual content of pure silver but the concentrations appears to be very high probably 90% or more.


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Does solid silver conduct electricity?

Yes, solid silver is an excellent conductor of electricity due to its high electrical conductivity properties. This is why silver is commonly used in various electrical applications such as in electrical wiring, circuits, and contacts.


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The contact surface of a typical contactor is usually made of materials that can withstand high electrical loads and minimize wear, such as silver, silver alloys, or copper. These materials are chosen for their excellent conductivity and resistance to oxidation. In some cases, they may be coated or treated to enhance performance and durability. The design ensures reliable operation and longevity in switching applications.


How can you remove silver contact from copper located in a circuit breaker without dissolving the silver?

If you are trying to recover the silver for reclamation don't bother. The silver is silver plated on the contact faces. it is only thousandth of an inch in thickness. The copper that the contact is made of would be worth more that the silver content on the copper. This is why electrical contacts should never be filed but burnished. Once the silver coating has been destroyed due to many opening and closing of the contact faces the contact face has but a short life left. Copper to copper contact faces burn up very fast due to excessive arcing and pitting. Once this starts the contact faces start to acquire a resistance rating which leads to higher heat generated at the contact face. Eventually the contact faces burn up making the breaker or contactor inoperable.


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