Transcription of Working with trip characteristic curves
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Working with trip characteristic curves
Low voltage circuit breakersWorking with trip characteristic curvesLow Voltage Products & Systems 1 ABB Inc. 888-385-1221 1 SXU210170B0201 Index1. Introduction ..22. Main Definitions ..33. ABB Low Voltage Circuit Breakers complying with the Standards UL 489 and UL 1066 Common terms on Low Voltage Circuit Breakers ..7 ABB Low Voltage Circuit Breakers ..8 Molded-Case Circuit Breakers (Tmax) ..8 Low Voltage Power Circuit Breakers (Emax) ..104. Thermal Magnetic and Electronic trip Units for ABB Circuit Breakers Thermal Magnetic trip Units ..12 Overload Protection (L).
6 - CURRENT-LIMITING RANGE: the RMS symmetrical prospective currents between the threshold current and the maximum interrupting rating current. 7 - CURRENT SETTING (lr): the RMS current an adjustable circuit breaker is set to carry continuously without tripping. It is normally expressed as a percentage of the rated current and is adjustable.
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