General properties of high current switching under 36 V DC for Ag and AgSnO2 contacts

Testé, Philippe; Andlauer, Richard; Leblanc, Thierry

doi:10.1049/iet-smt.2009.0035

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Cited by 7 publications

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“…Ag-SnO 2 materials are utilized in low-voltage switching devices and powder relays due to its remarkable resistance to arc erosion and welding [3][4][5][6][7]. However, Ag-SnO 2 materials exhibit less favorable contact resistance performance than Ag-CdO materials, because SnO 2 is more difficult to be wetted by liquid silver than CdO can easily deposit onto the contact surface by the arc reaction [8]. Contact resistance is a crucial parameter in circuit breaker and miniature circuit breakers because contact resistance of a circuit breaker must remain low to insure that thermal overload does not occur during normal make-andbreak operations [9].…”

Section: Introductionmentioning

confidence: 99%