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Definition of "CB" |
Circuit Breaker, Common base configuration , see exchange, central battery , Customer Bulletin , Citizen's band, chemical-biological, construction battalion (SEABEES) / A mechanical switching device capable of making, carrying, and breaking currents under normal conditions. Also making, carrying for a specific time, and automatically breaking currents under specified abnormal circuit conditions, such as those of short circuit. It is usually required to operate infrequently although some types are suitable for frequent operation. / Columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. / See Citizen’s band. |
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