ABB 2CSB202101R1250 Circuit Breaker

ABB 2CSB202101R1250 is a DDA202 A-25/0,03 residual current device (RCD) block designed as a two-pole FI block for ABB's S202/S302 distribution panels, delivering leakage protection for circuits in ABB switchgear assemblies. It carries a rated current In(AC) max of 25 A and a residual-current sensitivity of 30 mA, and it is specified as Type A, aligning with ABB's DDA202 A family. The 2P module is identified by the ABB SKU 2CSB202101R1250 and corresponds to the DDA202 A-25/0,03 configuration used in S202/S302 installations, serving as the protective block that trips on leakage to maintain electrical safety. ABB catalogs and type-approval documentation confirm the exact ratings and the model's role within the 2CSB202101R1250 family, ensuring compatibility with ABB distribution boards and reliable earth-leakage protection in multi-block assemblies. By design, it protects downstream circuits from earth leakage by triggering a trip when leakage is detected at 30 mA.