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IEEE Std C37.09 (Circuit-Breakers)

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nr VoltageConti-
nuous current
Short-circuit currentFreq
uency
Closing mechanismMinimum opening timeArc exting-
uishing medium
Designation Owner Certificate number Cert. type Contents Remarks
# kV kA Hz  ms         Help Help  
117.5 1250 31.5 50/60 Stored energy closing (springs, charged by motor) 20 vacuum TCB 17-31-12 TGOOD2325-15  85096 
217.5 3150 31.5 60 Stored energy closing (springs, charged by motor) 17.1 vacuum TCB 17-31-31 TGOOD2330-15  85096