The Schneider Electric A9D73606T is an Acti9 ISPN Vigi residual current breaker with overcurrent protection (RCBO) — a single-module (18 mm wide) combination device that integrates a 6 A thermal-magnetic MCB with a 30 mA earth-leakage module in one clip-on DIN-rail unit. Rated 6 A with a C-curve magnetic trip (5…10 × In), it handles 6000 A Icn breaking capacity at 230/240 V AC, 50 Hz. The 30 mA sensitivity covers personnel protection against direct-contact faults in TN earthing systems. This is a 1P+N device — switching and protecting the phase only, with a switched neutral on the left side.
The 6 A rating and C-curve suit lighting, general-purpose socket outlets, and small resistive/inductive loads where inrush is moderate — think a string of LED luminaires or a few power points in an office partition. The 30 mA earth-leakage threshold is the standard for personnel protection in most domestic and commercial installations; it will trip on a fault current above 30 mA, not on normal leakage from filters or electronics. The 18 mm width (2 × 9 mm pitches) means it occupies one standard DIN-rail module. Clip-on mounting with tunnel terminals (up to 25 mm² rigid upstream, 16 mm² rigid downstream) keeps wiring straightforward for a panel builder.