The Schneider Electric C10F6TM063 is a ComPacT NSX100F moulded-case circuit breaker rated 63 A at 40 °C with a thermal-magnetic TM-D trip unit. It delivers 36 kA Icu at 415 V AC — the F breaking capacity code — and carries a full 85 kA Icu at 240 V AC. This is a current-production part, still active on Schneider's catalog.
The 36 kA Icu at 415 V AC (EN/IEC 60947-2) is the figure that governs panel coordination in a 400 V distribution board. That's the SCCR you size upstream fuses or a transformer against. At 240 V it jumps to 85 kA, so if your service entrance is 240 V delta you have substantial headroom for fault currents from a large transformer. The thermal element tracks RMS heating for overloads; the magnetic element responds instantaneously to short-circuit currents. No earth-leakage function is integrated — the neutral protection setting is 3D (no protection). If you need ground-fault, add a Vigi module externally.
The 4-pole body measures 140 mm wide × 161 mm high × 86 mm deep — a standard ComPacT NSX footprint that fits existing Schneider panel cutouts. IP40 front face (IP40 conforming to IEC 60529) keeps dust out of the enclosure; IK07 impact rating means it survives a tool drop during commissioning.