The Schneider Electric A9D34832 is an Acti9 iC60H RCBO — a combined residual-current circuit breaker with overcurrent protection in a single 18 mm wide, 1P+N module. It protects a final subcircuit against overload, short-circuit (B-curve, 32 A rated current at 50 °C), and earth leakage (30 mA sensitivity) in TN earthing systems on AC 50 Hz networks.
B-curve means the magnetic trip operates at 3 to 5 times In (96 A to 160 A for this 32 A unit) — suited for resistive and general-purpose loads with modest inrush, such as lighting, socket outlets, and small office equipment. A C-curve would be preferred for motor or transformer circuits with higher inrush; specifying B here avoids nuisance tripping on the intended load type. The 30 mA earth-leakage sensitivity meets the standard requirement for additional protection against direct contact in final circuits (IEC 60364-4-41). Integrated earth-leakage protection means this single module replaces both a separate MCB and RCCD, saving one DIN position in the board. Rated 32 A at 50 °C — the thermal-magnetic trip is calibrated at that ambient. In a 40 °C enclosure the continuous current capacity is higher; in a 60 °C environment (e.g., unventilated panel near a heat source) you must derate. The manufacturer's thermal derating curves (not reproduced here) govern the actual ampacity in your specific enclosure fill. Depth of 77.5 mm and height of 110 mm fit within typical distribution board envelopes; verify clearance for the toggle and the padlock hasp when the enclosure door closes.
The A9D34832 is designed and certified to IEC 61009-1 and IEC 61009-2-2 — the international standards for RCBOs covering both overcurrent and residual-current protection. It carries suitability for isolation, meaning it can be used as a disconnecting means for the outgoing circuit.