It provides 30 mA sensitivity (Type AC) for 3-pole circuits on 400 V AC 50 Hz networks, rated at 25 A continuous current. This is the add-on block, not a standalone RCBO; it mates to the MCB via screw terminals and shares the same DIN-rail footprint.
Clip-on mounting to DIN rail, 3-pole wide (54 mm width, 69 mm depth, 81 mm height). The 9 mm pitch matches standard modular DIN-rail accessories, so it fills four 9 mm module positions.
That makes it suitable for general-purpose circuits with resistive, inductive, or electronic loads that don't generate DC fault currents. Voltage-independent tripping means the RCD operates without needing a separate power supply; it uses the fault current itself to trigger the mechanism.