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Why are there two tables for Masterpact and Powerpact Instantaneous Override values?

Product Line:
Masterpact and Powerpact P and R frames

The instantaneous override for the PJ breaker is shown as 10 kA on the first table attached , and it intends to show that  given a 10 kA RMS symmetrical fault with a worst-case power factor of 15% that the breaker would trip.  
The second table attached with higher numbers shows the actual instantaneous peak current at which the breaker trips.  These values are approx. 2.3x higher than the RMS symmetrical values shown on the first table.  These numbers account for the DC offset due to a 15% power factor plusthe RMS to Pk conversion factor.  If you have a power factor close to unity, this number multiplied by the Pk to RMS factor (0.707) would give you an RMS value scaled for the trip curves (22 kA x .707 = 15.5 kA).  As power factor deteriorates toward the 15% level, lower RMS symmetrical fault levels will begin to produce higher currents, until at 15% 10 kA produces an adjusted RMS current of 15.5 kA, or 22 kA peak.
The important thing to keep in mind when reconciling these two tables (and it is not noted on the first attachment) is that the first table assumes a 15% (worst case) power factor.
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