At 240 V it interrupts 187 kA, dropping to 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V — the high interrupting capacity at common distribution voltages makes this a fit for main or feeder breakers in industrial switchboards where fault current runs high.
Above that it derates: 154 A at 55 °C, 148 A at 60 °C, 142 A at 65 °C, 136 A at 70 °C.
Verify the existing busbar or lug kit spacing against the 105 mm pole pitch before ordering.
No auxiliary contact version is fitted, no communication function, no phase failure detection, no ground fault monitoring. The undervoltage release (UVR) is present — if the control voltage drops, the breaker trips. Maximum power loss is 28 W. Mechanical endurance is 20 000 operations.