Rated at 125 A continuous and 500 mA earth-leakage sensitivity, Type A (pulsating DC and sinusoidal AC fault detection), it covers the high-current distribution end of a panel — incomer or large subfeed — on a 230...415 V AC 50/60 Hz network. The 3-pole block mounts via clip-on to a 35 mm symmetrical DIN rail, with tunnel terminals accepting up to 50 mm² rigid or 35 mm² flexible conductors, torqued to 3.5 N·m.
The 125 A rated current (In) sets the continuous load capacity — sized for a main incomer or a large sub-distribution feeder, not a branch circuit. The 500 mA earth-leakage sensitivity is a high-threshold setting, typically used where nuisance tripping from leakage in long cable runs or motor drives must be avoided, rather than for personnel protection (which requires 30 mA). Type A detection covers sinusoidal AC faults and pulsating DC faults up to 6 mA DC superimposed — relevant for circuits with single-phase rectifiers, switched-mode power supplies, or variable-speed drives that can generate pulsating DC leakage. Voltage-independent tripping means the RCD operates without needing a separate power supply or the line voltage — it uses the fault current itself to trip, so it remains functional even if the neutral is lost upstream. Rated insulation voltage 500 V AC and impulse withstand 6 kV per IEC 60947-2, pollution degree 3 — suitable for industrial panels where the environment is not clean and transient overvoltages are expected.
Clip-on mounting to 35 mm DIN rail, 10 module pitches wide (171 mm), with a depth of 73 mm and height of 95 mm. The white housing and tunnel terminals are standard for panel-building; the 15 mm wire strip length and 3.5 N·m torque are typical for this conductor range. Compliant with EN 61009 and IEC/EN 61009-2-1 (the RCBO standard for RCD + MCB in one unit, though this is an add-on block), and IEC 60947-2 for the insulation and impulse ratings. IP20 finger-safe front; no washdown rating — indoor panel use only.