Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — numbers that tell you it can handle high-fault utility feeds or transformer secondaries without cascading upstream.
Above that it derates: 15.36 A at 55 °C, 15.04 A at 60 °C, 14.72 A at 65 °C, and 14.4 A at 70 °C. If the panel runs hot — say a packed enclosure near a furnace line — the 70 °C ceiling still allows 14.4 A continuous, which is enough for a 15 A feeder but not a full 16 A load.
The 76.2 mm width matches the standard 3-pole MCCB footprint for a SENTRON 3VA frame — it drops into the same DIN-rail or screw-mount panel cutout as other 3VA line-protection breakers. Latching endurance is 15,000 operations; that's typical for a fixed-mounted MCCB in a main or feeder role, not a daily-switch application.