The ABB DS201-C25/0.03 is a 25A, 30mA (Type AC) 2P RCBO designed to provide comprehensive earth leakage, overload, and short-circuit protection in residential applications. Manufactured in Italy, this 230V device is installed at the final circuit level to ensure localized safety without tripping the entire electrical system. It serves as a dual-purpose safety mechanism, replacing the need for separate MCB and RCCB units in high-density distribution boards.