What this is and what it does
This A9S70763 is a 3P+N switch-disconnector from the Acti9 iSW-NA line, rated 63 A at 400/415 V AC in AC-22A utilization category—the duty class for switching mixed resistive and inductive loads in control isolation. Isolation suitability is confirmed per IEC 60947-3, so the switch provides a visible break for safe maintenance work. Rated insulation voltage is 500 V AC; impulse withstand voltage 6 kV. Short-time withstand current is 800 A for 1 s and short-circuit making capacity 5 kA alone. These numbers define where it can sit in a selectivity study.
Mounting and wiring constraints
Clip-on DIN rail mounting; 72 mm wide, 85 mm high, 74 mm deep. Tunnel terminals accept 1…35 mm² rigid or 1…25 mm² flexible. Tightening torque 3.5 N·m, strip length 14 mm. Wire both top or bottom; comb busbars compatible. Neutral position is left; local ON/OFF indication. IP20. Operating temperature -35…70 °C with 95 % RH at 55 °C; storage -40…85 °C. Pollution degree 3.