Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V.
The auxiliary contact version is 2 HQ switches. Panel builders: the UVR coil needs its own control power; verify polarity on the free-wheel diode if you're wiring it into a safety circuit.
That 76.2 mm width is three 25.4 mm pole spaces — standard for a 3-pole MCCB in a Siemens panelboard or any DIN-rail adapter kit.
The thermal derating curve is flat from 40 °C to 50 °C at 125 A, then drops to 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C — useful if the breaker lives near a hot transformer or in a non-conditioned space.