The Schneider Electric A9F08463 is a 4-pole Acti9 iC60H miniature circuit breaker rated at 63 A with a D trip curve. The 42 kA Icu at 12-133 V AC (30 kA at 220-240 V, 15 kA at 380-415 V, 10 kA at 440 V) tells you the interrupting capacity at the fault level — if your panel's prospective short-circuit current stays under those values, this breaker clears the fault without welding contacts or cascading upstream. It is certified to both EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (domestic/similar) standards, so it qualifies for distribution boards and industrial sub-panels alike. The 4 protected poles suit 3-phase + neutral circuits where you need overcurrent protection on all four paths.
Panel integration — DIN rail, 8 module pitches, IP20
The 72 mm width equals 8 x 9 mm pitches, so it occupies eight module positions in a distribution board. Strip length is 14 mm.
Durability and environmental ratings
Rated for 10,000 electrical cycles and 20,000 mechanical cycles — sufficient for a distribution breaker that sees infrequent switching. Overvoltage category IV — suitable for the main incoming supply point where transient overvoltages are highest.