The ABB DS201 B10 A30 is a 2-pole RCBO — residual current circuit breaker with overcurrent protection — rated 10 A with B-curve tripping and 30 mA residual fault sensitivity. The 30 mA residual threshold catches earth faults at a level that protects personnel against direct contact (IEC 60364-4-41).
Sourcing and fit
The 69 mm depth fits standard consumer unit and enclosure depths — no clearance issue on a standard 85 mm deep enclosure. The 2.8 Nm tightening torque on the screw terminals is within the range of a standard electrician's screwdriver; no special tooling needed.