The Schneider Electric A9TDNC625 is an Acti9 Active iCV40N ARC residual-current circuit breaker with overcurrent protection (RCBO) in a 1P+N pole configuration, rated 25 A with a C trip curve. The thermal-magnetic trip unit handles both overload and short-circuit protection, while the earth leakage and arc-fault detection (event management: earth leakage, overload) are integrated — the local signalling includes ON, OFF, fault trip LED, and arc fault diagnostic. This is a current-production part (lifecycle stage: current).
The 1P+N configuration switches the phase and provides a switched neutral; neutral position is left, so it fits standard single-phase distribution boards where the neutral bus is on the left. The 73 mm depth and 91 mm height are standard for Acti9 RCBOs, so it fits existing Acti9 enclosures without crowding.
Deployment context
The RCBO is tropicalised to severity B per IEC 60068-2-30 for 28 days, so it handles high-humidity environments (95 % RH at 55 °C) without condensation issues. Pollution degree 2 (non-conductive pollution, occasional condensation) covers typical clean indoor installations. Operating altitude is 2000 m — no derating needed for most sites.