At 690 V the rated short-circuit breaking capacity is 5 kA, and at 240 V it reaches 100 kA, so the part's real-world interrupting rating depends on which line voltage your installation uses.
Sizing for motor loads
This breaker carries motor horsepower ratings across common North American and IEC voltage bands: 5 hp at 230 V, 10 hp at 220/230 V, 20 hp at 460/480 V, and 7.5 hp at 200/208 V. Those ratings tell you the maximum induction motor it can protect at those voltages — useful when filling a BOM line for a pump or conveyor drive section.
Main circuit connections are screw-type terminals accepting 2x (1 to 35 mm²) or 1x (1 to 50 mm²) solid or stranded copper — M6 stud size on the main contacts.