It carries a continuous current of 100 A at 40 °C, holds that rating up through 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. That thermal curve means the breaker can sit in a warm panel without stepping down a frame size — useful when the enclosure runs hot from other gear. Breaking capacity is 121 kA at 240 V AC, dropping to 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Power loss at full load runs 27.5 W maximum — factor that into the enclosure thermal budget.
Built-in undervoltage release
No ground-fault monitoring module is included; this is a straight line-protection MCCB with undervoltage and auxiliary signaling only.