That's a standard feature on SIRIUS breakers, not an add-on option.
Short-circuit breaking capacity is 100 kA at 400 V AC — the same rating holds at 240 V, 500 V, and 690 V AC. That's a full-range 100 kA rating, not a derated curve.
The 45 mm width takes one standard module slot. Depth is 96 mm, height 97 mm. Terminals are screw-type for the main circuit, accepting 2x (1 to 2.5 mm²) solid or stranded, or 2x (2.5 to 6 mm²). AWG equivalents are 2x (14 to 10). No auxiliary contacts are included — if you need a remote trip signal, you'll add the separate auxiliary switch block (confirms it's compatible).
Shock resistance is 25 g for 11 ms. Mounting position is any.