Its breaking capacity reaches 75.6 kA at 240 V AC and 52.5 kA at 415 V AC, which means it can safely interrupt high fault currents on industrial feeders without upstream cascading.
Above that, the thermal trip element derates: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C.
The interrupting rating drops as system voltage rises: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. For a 400 V line with an available fault current of 50 kA, this breaker provides adequate margin. At 690 V, the 7.5 kA rating limits its use to lower-fault installations.
Integrated auxiliary and release options
The 101.6 mm width (4 inches) matches standard MCCB panel cutouts for 4-pole breakers. Depth of 70 mm leaves room for rear bus connections in a typical distribution cabinet.