It carries a rated current of 320 A at 40 °C and delivers a breaking capacity of 121 kA at 240 V, scaling down to 75.6 kA at 415 V and 52.5 kA at 500 V. This is an active-production unit — lifecycle status is current, so it remains a standard catalog item through normal Siemens distribution channels.
The 320 A rating holds flat from 40 °C through 50 °C, then derates linearly to 292 A at 70 °C. Breaking capacity of 121 kA at 240 V and 75.6 kA at 415 V puts this breaker squarely in high-fault-current applications — large transformer secondaries, industrial mains, or busway feeds where available fault current exceeds typical 65 kA MCCB ratings. The 11.9 kA figure at 690 V is still adequate for most 690 V industrial systems, but verify against your transformer impedance.
Integrated accessories and wiring
The trip indicator is present, so a visual flag shows whether the breaker tripped on fault versus being manually opened — helpful for fault isolation on a live panel without metering. No communication module or ground-fault monitoring is included. This is a line-protection breaker without integrated metering or networking.