The 1 A rating means it protects a circuit drawing up to 1 A continuous — sized for a control transformer primary, a PLC power supply feed, or a signal loop, not a motor branch. The D curve (magnetic trip at 12× In, ±20%) means it tolerates inrush up to roughly 14.4 A before instant tripping, so it suits loads with a high starting surge like small transformers or solenoid banks.
The single-pole (1P) form factor breaks only the line conductor; the neutral is switched separately or left solid. Double terminals top and bottom accept 1 to 25 mm² rigid or 1 to 16 mm² flexible, with a 14 mm strip length and 2 Nm tightening torque. The toggle actuator and trip indicator give local status without opening the panel door. IP20 finger-safe terminals suit enclosed panel use — not for wet or washdown locations.
Dual-certified to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (household / similar) — so it qualifies for both panel-level distribution and final subcircuit protection. Pollution degree 3 (conductive pollution, typical in control cabinets without climate control). Overvoltage category IV (mains-level surge withstand). Suitability for isolation marked on the device, per both standards.