It combines overcurrent and earth-fault protection in a single 4-module-wide (72 mm) package, saving a DIN-rail position compared to separate MCB and RCD units. The C-curve means it handles inrush from motor and lighting loads up to 10× rated current before the magnetic trip fires — sized for pump, compressor, or fluorescent bank starts. Type A residual detection catches pulsating DC fault currents that a plain AC type would miss, which matters for variable-speed drives, LED drivers, and switched-mode power supplies common in commercial and light-industrial panels.
Breaking capacity and fault clearing
Mounts in any position on standard DIN rail. Installation depth of 70 mm means it clears most 80 mm-deep enclosures. IP20 rating applies only when the distribution board is installed and conductors are connected — the front face is finger-safe, but the busbar area needs enclosure protection during handling.