where t is the fault duration, and Ta is the thermal withstand time of the device.
To calculate the Short-Circuit Current Rating (SCCR), you must determine the "weakest link" in an electrical panel by identifying the lowest rated component or protected branch. how to calculate sccr
Control panel with available fault current of 50 kA. Components: where t is the fault duration, and Ta
Isc_asym = Isc_sym * (1 + (X/R))
Compare the calculated SCCR with the device's or system's rated SCCR. Ensure that the calculated SCCR does not exceed the rated SCCR. where t is the fault duration