CSRA-115A-2-30-AR R-K Current Sensing RelayOperation AC Current Sensing The AC input voltage must be applied to the CSRA continuously during operation. The power up time delay is provided to allow for the inrush current of a motor and does not affect the CSRAs output contact during this time. The CSRA will remain in the de energized state during the power up time delay. A nuisance trip delay is activated after the power up delay to avoid nuisance trips. Overcurrent Mode (Auto Reset): If the