The C10F6TM040C is a Schneider Electric ComPacT NSX100F moulded-case circuit breaker with a 40 A thermal-magnetic TM-D trip unit, four poles, and a 36 kA interrupting capacity at 415 V AC. The 40 A rating at 50 °C covers typical lighting, small motor, or general distribution loads without derating in a warm enclosure.
At 220/240 V it jumps to 85 kA Icu, and at 690 V it still holds 8 kA Icu. That spread means the same breaker can be used across different voltage levels in the same plant without swapping frames. The utilisation category A (non-selectivity-oriented) means it's designed to clear faults fast rather than coordinate with downstream devices — fine for a main or branch breaker where you want quick trip, not for a selective main where you need time delay.
Mounts flat on a backplate — no DIN rail here. The 140 mm width and 161 mm height fit standard MCCB cutouts in distribution boards. IP40 front face keeps out tools and fingers; IK07 impact rating means it survives a 2 J hammer blow — fine for a locked electrical room but not for a washdown area.
Durability and duty cycles
Rated for 50,000 mechanical operations and 30,000 electrical cycles at rated current (40 A, 440 V). That's a solid 10+ years of daily switching in a machine-tool or conveyor application. At half rated current (20 A) the electrical endurance doubles to 50,000 cycles — typical for lightly loaded feeder breakers that cycle with the shift schedule.