The instantaneous trip response (no intentional delay) makes it suited for circuits requiring rapid disconnection on earth fault, such as socket-outlet circuits in commercial or residential final distribution boards.
Rated operational voltage is 230...240 V AC at 50/60 Hz per EN/IEC 61009-1, so it is designed for standard single-phase (line-to-neutral) supplies in European and similar 230/400 V distribution systems. The 10 mA sensitivity is exceptionally low — typically reserved for circuits where a higher trip threshold could be hazardous (e.g., medical locations, wet areas, or equipment requiring enhanced personnel protection). The Type A-SI (Super Immunised) classification means the device will not trip spuriously on 50 Hz harmonics, 1 kHz switching supplies, or pulsed DC superimposed on the AC waveform, which is a common failure mode for standard Type A RCDs when feeding variable-speed drives, UPS systems, or LED drivers. The voltage-independent tripping mechanism ensures the RCD operates even if the line voltage is lost — the fault energy itself powers the trip, a critical safety feature for circuits where loss of neutral could otherwise disable protection. The add-on design means this block physically mounts to the load side of a compatible iC60 MCB via screw terminals, not as a standalone device. It occupies 3 x 9 mm pitches on the DIN rail — 27 mm total width — so it adds three module widths to the breaker assembly. The tunnel-type terminals accept 1...25 mm² rigid or 1...16 mm² flexible conductors, and the recommended tightening torque is 2 N·m.
The device is designed and certified to EN 61009-1 and IEC 61009-1, the standards for residual current operated circuit breakers with integral overcurrent protection (RCBOs). The pollution degree is 3 per IEC 60947-2, meaning it is suitable for environments with conductive or dry non-conductive pollution — typical of industrial control panels and distribution boards. The impulse current withstand is 3000 A at 8/20 µs waveform, confirming it can survive surge events without damage.