The Schneider Electric C10F4TM063 is a ComPacT NSX100F frame circuit breaker with a 63 A thermal-magnetic TM-D trip unit, 4 poles, and an F breaking capacity code — meaning 36 kA Icu at 415 V AC. That 36 kA interrupting rating at 415 V is the figure that governs selectivity coordination in a 400 V distribution board; the breaker also carries 85 kA Icu at 240 V and 25 kA at 480 V (UL 60947-4-1), so it slots into both IEC and UL-labeled installations without a separate SCCR derate for the same frame.
Front connections both upside and downside; connection pitch is 35 mm. The 4-pole version with neutral on the left (fixed position) fits standard 140 mm wide panel cutouts.
Durability and environmental limits
Mechanical endurance is 50,000 cycles; electrical endurance at 440 V rated current is 30,000 cycles — enough for frequent switching in a distribution board feeding motor loads or lighting contactors. IP40 enclosure rating and IK07 impact resistance handle typical panel environments; relative humidity up to 95% is accommodated without derating. Operating altitude to 2000 m without derating, with derating curves above that.