The interrupting capacity is the headline number here: 330 kA at 240 VAC, 242 kA at 415/440 VAC, and still 187 kA at 500 VAC. That puts it in the high-interrupting class for industrial switchgear where fault currents are substantial. That gives you remote status and trip indication without an add-on module.
That 86 mm depth (3.39 in) is the dimension to check against enclosure depth and busbar clearance — it's a standard SENTRON 3VA frame size, so it fits the same mounting footprint as other 3VA 3-pole breakers in the range. The 105 mm width (4.13 in) per pole is typical for this class; three poles plus neutral accessory space is already accounted for in the housing.
What the auxiliary configuration means for integration
The built-in auxiliary switch set (2 aux + trip alarm + electrical alarm) eliminates the need for a separate accessory purchase if you need remote indication of breaker position and trip events. The shunt trip (STL) allows remote tripping via a control signal — common in emergency-stop circuits or supervisory shutdown sequences.