Rcd trip times help

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Bradley6969

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Hi have 60947-2 Main Switch with added 61008 with settings for mA and mS, now come to test and it’s set on 300mA with delay of 0.5 so 500ms, now what I’m wanting to know is: 500ms is the maximum tripping time for a S type RCD, so what’s the point in having more settings as this has a variable from 3000mA and 3 seconds? I know for selectivity? But what would you put in test report as it’s not going to trip??
 

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