The interrupting capacity is the headline: 220 kA at 240 V, tapering to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V. An undervoltage release (UVR) is built in, designed as a separate auxiliary release that trips the breaker when supply voltage drops below a threshold — typical for motor branch circuits where you want the breaker open on a power loss to prevent auto-restart. The breaker carries a current-production lifecycle status, so it's still a standard catalog item through Siemens distribution.
Thermal derating — the real-world continuous current
Above that, it derates: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. Maximum power loss is 27.5 W, which matters for enclosure thermal rise calculations when grouping multiple breakers.