Three poles, 63 A frame, and interrupting ratings that climb to 242 kA at 240 V and 187 kA at 415 V. At 690 V the rating drops to 3 kA — that's the arc-extinction limit for this frame size, so if your line side runs above 500 V (121 kA at 500 V), confirm the available fault current stays under the curve.
That 105 mm width is a standard 3-pole MCCB footprint — it occupies three 35 mm DIN modules worth of panel width if you're spacing by the usual 17.5 mm per pole. The UVR drops the breaker if control voltage falls below its dropout threshold — common in safety circuits where a loss of control power should open the main feeder.