It protects people and equipment against earth-leakage faults by disconnecting the circuit when it detects 30 mA of leakage current — that's the sensitivity level for personal shock protection, not just equipment damage. Rated for 63 A continuous load at 220…240 V AC, 50/60 Hz, it's sized for outgoing circuits in residential and light commercial distribution boards. It's voltage-independent, so the tripping mechanism works even if the supply neutral is lost. Rated impulse withstand voltage is 6 kV (Uimp), and it complies with EN/IEC 61008-1.
Terminals accept 1…35 mm² solid or 1…25 mm² flexible, with a stripping length of 14 mm.