Vacuum circuit breaker with weldable copper switch contacts
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United States of America Patent
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Aug 20, 2024
Grant Date -
Jan 19, 2023
app pub date -
Nov 17, 2020
filing date -
Nov 17, 2020
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for producing an electrical switch contact arrangement for a vacuum circuit breaker includes the following steps: a) providing two electrical contact pieces made of copper or a copper alloy; b) coating the electrical contact pieces with aluminum or an aluminum alloy, the coating of the contact pieces taking place by means of a cold gas spraying method; c) welding each of the sides coated in method step b) to a current transfer contact; and d) arranging the units obtained in method step b) inside the vacuum circuit breaker. There is also described an electrical switch contact arrangement for a vacuum circuit breaker with the contact pieces produced by the method according to the invention.
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