missed the question. 

The max non- actuation time for a given over current, is the longest pulse of that level of earth leakage over-current you might apply and be sure you can do so without the trip process ever starting - i.e. without ever passing the point of no return in de-latching. Note that you may be able to pass a larger current for a bit longer and even after the point of no return is reached may take quite a bit longer  for the contacts to be actually open - hence the other figures.

So 

a 100ma S type  will not de-latch in 130msec at 100mA, but it may at any longer duration, and will always have de-latched and be open cct by 0.5 seconds at that fault current or higher

it  will not de-latch in 60msec at 200mA, but it may at any longer duration, and will have both de-latched and be open cct within  200ms at that current or higher

it will not de-latch in 50msec at 500mA, but it may at any longer duration, and will definitely have both de-latched and be open cct within  150ms at that current or higher

the explanation under the table is poorly worded.

Mike.

missed the question. 

The max non- actuation time for a given over current, is the longest pulse of that level of earth leakage over-current you might apply and be sure you can do so without the trip process ever starting - i.e. without ever passing the point of no return in de-latching. Note that you may be able to pass a larger current for a bit longer and even after the point of no return is reached may take quite a bit longer  for the contacts to be actually open - hence the other figures.

So 

a 100ma S type  will not de-latch in 130msec at 100mA, but it may at any longer duration, and will always have de-latched and be open cct by 0.5 seconds at that fault current or higher

it  will not de-latch in 60msec at 200mA, but it may at any longer duration, and will have both de-latched and be open cct within  200ms at that current or higher

it will not de-latch in 50msec at 500mA, but it may at any longer duration, and will definitely have both de-latched and be open cct within  150ms at that current or higher

the explanation under the table is poorly worded.

Mike.