Rated 16 A with a 30 mA earth-leakage sensitivity and a B tripping curve, it protects branch circuits against both overload/short-circuit and ground faults.
For motor or transformer circuits with higher starting surges, a C or D curve would be needed to avoid nuisance tripping. The 30 mA residual sensitivity covers personnel protection (indirect contact) and fire prevention; it's the most common rating for final circuits in residential and commercial installations per IEC 60364. Thermal-magnetic trip technology means the thermal bimetal handles sustained overloads (time-inverse characteristic) while the solenoid reacts to high short-circuit currents. The limitation class 3 (EN/IEC 61009-2-1) indicates the device limits let-through energy well, reducing stress on downstream wiring and equipment during a fault. The 18 mm pole pitch keeps the 3P+N unit at a 4-module width (72 mm plus tolerance).