Low-silver, low-profile electrical contact apparatus and assembly
AssigneeSiemens Industry, Inc.
InventorsHai Chen, Mario Munoz, Jesus Hernandez
Life of this patent
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Abstract
An electrical contact apparatus having low silver content and defined thickness and length geometry. The electrical contact apparatus has a contact body made of a silver-containing alloy having SC≤60 wt. %, and having L/T≥5.4, wherein L is a longest contact length dimension of the contact body, T is a maximum contact thickness dimension of the contact body, SC is the silver content in wt. %, and L/T is a contact dimension ratio. Electrical contact assemblies, circuit breaker electrical contact subassemblies, and methods of operating a circuit breaker electrical contact subassembly are disclosed, as are other aspects.
Claims6
A circuit breaker electrical contact subassembly, comprising:
- a stationary contact support and a stationary contact body coupled to the stationary contact support, the stationary contact body made of a silver and tungsten alloy having 40 wt. % more than or equal to (≤) SC less than or equal to (≤) 60 wt. % and Ls/Ts more than or equal to (≥) 7.5, and
- a moveable contact support and a moveable contact body coupled to the moveable contact support, the moveable contact body made of a silver and tungsten alloy having 40 wt. % more than or equal to (≤) SC less than or equal to (≤) 60 wt. % and 5.4 more than or equal to (≤) Lm/Tm less than (<) 7.5, and
- wherein Ls and Lm are a longest contact length dimension of the stationary contact body and the moveable contact body, respectively, and Ts and Tm are a maximum contact thickness dimension of the stationary contact body and moveable contact body, respectively, and SC is a silver content in wt. %.
Dependencies are inferred from the claim text.