It adds 300 mA sensitivity earth-leakage protection to the outgoing circuit, with instantaneous trip response. The 3P (three-pole) variant covers a 230...415 V AC 50/60 Hz network, rated at 25 A continuous current.
Clip-on mounting onto a DIN rail, with a plug-in electrical connection to the upstream MCB. The block occupies 6 x 9 mm pitches (54 mm width) on the rail. Bottom tunnel terminals accept 1...25 mm² rigid or 1...16 mm² flexible cable, tightened to 2 N·m. Strip length is 14 mm. The assembly fits a standard modular enclosure with IP40 face protection; the device body itself is IP20.
Designed and certified to EN/IEC 61009-1 and EN/IEC 61009-2-1 for combined RCD/MCB assemblies. Rated insulation voltage (Ui) is 500 V AC; impulse withstand (Uimp) is 6 kV per IEC 60947-2. Pollution degree 3 per IEC 60947-2. The 8/20 µs impulse current withstand is 250 A per IEC 61009-1.
