The Schneider Electric A9N16209 is a 2-pole residual current circuit breaker (RCCB) from the Acti9 xID range, rated 63 A with 100 mA earth-leakage sensitivity, Type AC. It protects against sinusoidal AC fault currents in residential and commercial final circuits — the 100 mA threshold suits sub-distribution boards or circuits feeding equipment with some natural leakage, where a 30 mA device would nuisance-trip. The Type AC designation means it responds only to alternating residual currents, not pulsed DC or mixed-frequency faults, so it belongs in standard lighting, socket-outlet, or general-purpose AC circuits, not inverter-fed or EV-charger feeds. The instantaneous trip characteristic means no intentional delay; it clears the fault within the standard RCCB response time.
Tunnel terminals accept 1...35 mm² rigid or 1...25 mm² flexible cable; wire stripping length is 14 mm. The 18 mm phase-to-phase pitch aligns with standard busbar systems in Acti9 distribution boards. The white housing carries local ON/OFF and fault-trip indication, plus a padlocking provision for lockout/tagout during maintenance.
Designed and certified to EN 61008-2-1, EN/IEC 61008-1, and IEC 61008-2-1 — the core RCCB product standards covering operation, tripping accuracy, and endurance. Pollution degree 2 (non-conductive pollution only, occasional condensation) is the typical rating for protected indoor switchgear. Electrical and mechanical durability are both rated at 4000 cycles, which aligns with the expected service life of a distribution-board RCCB under normal switching and fault-clearing duty.