It carries 50 A continuously at 40 °C and can interrupt fault currents up to 75.6 kA at 415 V — that's the kind of headroom that keeps a fault from cascading upstream and taking out a whole switchboard. Maximum power loss is 14.6 W, which matters when you're packing several breakers into a panel and need to manage heat rise.
Breaking capacity — the real numbers
This breaker's interrupting rating varies with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V.
Thermal performance and derating
Above that it derates: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If your panel sits in a hot machine room or near a furnace, factor the derating into your load schedule.
Built-in accessories and options
The auxiliary switches can feed a PLC input for breaker status, and the shunt trip lets a safety relay or emergency-stop circuit kill power remotely. Voltage trigger is present, meaning it can respond to an undervoltage condition if wired accordingly — but the undervoltage release itself is not installed on this unit.