The Schneider Electric A9D54606 is an Acti9 iDPN Vigi residual-current circuit breaker with overcurrent protection (RCBO) — one module wide, 1P+N, rated 6 A with a B tripping curve and integrated 30 mA earth-leakage protection. It combines a thermal-magnetic MCB and an RCD in a single DIN-rail unit, so a single device handles both overload/short-circuit and ground-fault protection on a final subcircuit. The 4500 A Icn breaking capacity at 230…240 V AC 50 Hz (per EN/IEC 61009-2-1) means it safely interrupts a fault up to 4.5 kA without welding or rupturing — adequate for most residential and light commercial distribution boards where the prospective short-circuit current stays under that threshold. The B-curve (magnetic trip at 3…5 × In) makes it a good fit for resistive or general-purpose loads with low inrush, like lighting circuits or socket outlets.
Clip-on mounting to DIN rail, 36 mm wide (4 × 9 mm pitches), 85 mm tall, 73 mm deep — standard modular footprint that slots into any Acti9 or Multi9 distribution board. Tightening torque 2 N·m, strip length 15 mm. IP20 on the front face, IP40 inside the modular enclosure — fine for dry indoor panels, not for washdown zones.