Type A detection means it catches pulsating DC fault currents from single-phase rectified loads (LED drivers, switched-mode supplies, washing machine electronics), not just sinusoidal AC leakage.
DIN-rail integration note
The 1P+N width (1 module) keeps the distribution board fill factor tight — one pole per final circuit, no wasted space. Terminal capacity accepts up to 25 mm² conductor, sized for the 10 A rating with headroom for voltage drop compliance on longer runs.