The DS201MC25AC300: The ABB DS201 M C25 AC300 is a 1+N-pole residual current circuit breaker (RCBO) combining overcurrent and earth-leakage protection in a single 35 mm-wide module.
With an Icu of 15 kA and Ics of 11.2 kA at 300 V AC, this DS201 M can clear a fault up to 15 kA once and still be functional, and up to 11.2 kA repeatedly — enough for most final subcircuits in a TN or TT system where the prospective short-circuit current stays under those thresholds.
Snap-on DIN rail mounting, 35 mm wide, 85 x 35 x 69 mm. Ambient operating range -25 to 55 °C covers most unheated electrical rooms and enclosures.
Listed as current-production lifecycle stage. The DS201 M series remains ABB's standard RCBO line for System pro M compact® distribution boards.