Being a Residual Current Breaker, this device combines overcurrent protection (MCB function) with earth leakage detection (RCD function) in one unit. That saves a DIN slot versus separate devices, but means the trip curve and sensitivity are fixed — verify the residual current rating against your downstream load's leakage profile before specifying.
Comparison Within the ABB RCCB/RCBO Family
Within ABB's RCCB/RCBO range, the 2CCF017174R0001 is a standard-sensitivity unit. Higher-sensitivity variants exist for wet-location or medical circuits, but this part targets general-purpose industrial distribution.