The Schneider Electric A9R05263 is a 2-pole Acti9 iID residual current circuit breaker (RCCB) rated at 63 A with a 300 mA earth-leakage sensitivity. Certified to EN/IEC 61008-1, pollution degree 3, impulse withstand 6 kV.
Ratings and deployment context
Rated operational voltage 220…240 V AC 50/60 Hz; insulation voltage 500 V. Breaking and making capacity Idm 1500 A / Im 1500 A — sufficient for fault clearing in a standard final-distribution panel. The selective (time-delayed) characteristic means this RCCB can be installed as an incoming or upstream device, while instantaneous RCCBs sit on the branch circuits. Voltage-independent residual current tripping technology ensures operation even if the supply voltage is lost — a safety-relevant feature for installations where the neutral-earth fault path must be interrupted regardless of mains condition.
Clip-on mounting to DIN rail, 4 module pitches (36 mm wide). Neutral on the left. Terminals accept 1…35 mm² rigid or 1…25 mm² flexible (with or without ferrule); wire strip length 14 mm, tightening torque 3.5 N·m. IP20 finger-safe (IP40 in modular enclosure).