RCCB for fixed-installation fault protection
It interrupts earth faults instantaneously — no intentional delay — so it clears ground-leakage paths fast enough to protect personnel in fixed electrical installations per IEC 61008-1.
The IP20 rating applies once the distribution board is installed with conductors connected; no additional sealing required inside a closed panel. Feed from top or bottom; for SIGRES harsh-environment variants the top-feed position keeps the residual-current electronics powered even in the off state.
Thermal stability across the operating band
The silicon-free construction suits clean-room or coating-line panels where outgassing contaminants are a concern.