The Schneider Electric C10H6TM040C is a ComPacT NSX100H molded case circuit breaker (MCCB) with a 40 A TM-D thermal-magnetic trip unit, built to EN/IEC 60947-2 for distribution duty. It's a 4-pole unit with toggle control and front connections, sized for backplate mounting in a switchboard or panel. The 40 A rating at 50 °C is the continuous current it carries without nuisance tripping, so it's sized for a 40 A feeder or branch circuit in a 50 °C ambient panel.
There's no earth-leakage module on this variant — it's a straight overcurrent device. The 100 kA Icu at 240 V AC is the maximum interrupting capacity at that voltage; at 415 V it's 70 kA, at 690 V it drops to 10 kA. For a 480 V or 400 V distribution panel, the 70 kA figure is the one to check against your available fault current. Mechanical durability is 50000 cycles, electrical durability varies with load — 50000 cycles at 440 V at half rated current, 30000 at full In. That's robust for a panel main or heavy feeder that cycles infrequently.