Breaking capacity is the headline: 220 kA at 240 V AC, 154 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. At 415 V the 154 kA still covers most industrial distribution panels; at 690 V the 17 kA is adequate for smaller drives and auxiliary loads. The undervoltage release (UVR) is factory-fitted — part of the order code suffix. That means the breaker trips immediately when supply voltage drops below the release threshold, which is standard for emergency-stop circuits or to prevent automatic restart after a brownout.
Thermal derating and installation fit
At 55 °C it carries 194 A, at 60 °C it carries 188 A, at 65 °C it carries 182 A, and at 70 °C it carries 176 A. If your enclosure runs hot (stacked breakers, poor airflow), apply that curve rather than oversizing the breaker. The IP40 front protection means it's suitable for general indoor panel mounting where tools are the only intrusion hazard; not for washdown zones. Dimensions: 105 mm wide, 158 mm high, 70 mm deep.