The interrupting ratings are 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — figures that govern the available fault current the breaker can safely clear without upstream coordination failure.
Thermal derating and ambient conditions
Above that, the continuous current derates per the datasheet curve: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C.
Auxiliary contacts and mechanical endurance
Mechanical endurance is rated at 15 000 cycles.
