This is a line-protection design, meaning it's meant for feeder circuits, not motor protection (no adjustable overload class). Breaking capacity is the headline: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V. Power loss at rated load is 8.5 W maximum — useful for thermal calculations in a crowded enclosure.
The 3-pole width (76.2 mm) is standard for this frame size — it fits the typical panel cutout for a 3VA1 MCCB. It's a straight thermal-magnetic breaker with no accessories built in — add them externally if needed.