What this RCCB does on the line
The short-time delayed design (SIGRES function) means it rides through brief inrush or transient leakage without nuisance tripping, which is what you want when coordinating downstream RCCBs in a selective distribution scheme.
Snaps onto DIN rail (REG) and occupies 4 modular width units at 60 mm grid spacing — 72 mm wide, 90 mm tall, 70 mm installation depth. The supply can land top or bottom; for the SIGRES function, power stays present at the top terminals even when the device is switched off. IP20 with connected conductors, so it lives inside a distribution board, not exposed to washdown. Silicon-free construction, which matters if this panel shares air with potting or coating lines.