The adjustable thermal-magnetic trip unit covers 300 A to 1 500 A, which sets the short-circuit and overload pickup; you dial it in for the connected load, not the breaker's own frame. Breaking capacity hits 330 kA at 240 V, 242 kA at 415 V, and still 187 kA at 500 V — only drops to 3.7 kA at 690 V, which is typical for this frame class.
That means you get remote trip capability and status feedback without ordering separate add-on modules. Power loss is 10 W max, negligible for enclosure heat budgeting.