Its headline figure is the interrupting capacity: 220 kA at 240 V, dropping to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V.
Thermal rating and derating curve
Above 50 °C it starts to pull back: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If your enclosure runs hot (say 55 °C near a drive), you still get 49 A — enough for a 50 A feeder with a slight safety margin.
Built-in accessories: shunt trip and auxiliary switches
The shunt trip lets a PLC or safety relay kill the breaker remotely; the aux switches give you open/closed contacts for your control system. Power loss at rated load is 14.6 W — modest for a 50 A frame, so it won't cook adjacent components in a dense panel.
Footprint: 76.2 mm wide (3 in), 130 mm tall (5.12 in), 70 mm deep (2.76 in). The supplied basic switch is 3VA11506EF360AA0.