It's built for line protection — the fixed version without a trip indicator, undervoltage release, phase failure detection, or ground fault monitoring. The interrupting ratings climb to 121 kA at 240 V and 75.6 kA at 415 V, dropping to 52.5 kA at 440 V and 11.9 kA at 690 V — so the SCCR headroom at typical distribution voltages is substantial.
Above that it derates: 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. Front protection is IP40 — fine for a clean panel interior, not for washdown zones. That 76.2 mm width (roughly 3 inches) is a standard MCCB footprint for 3-pole frames in this class — it fits existing SENTRON panel cutouts and busbar layouts without rework.