Breaking capacity is where this breaker earns its keep: 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V. At 500 V and 690 V it still holds 7.5 kA — enough for most motor branch circuits on a 480/277 V system. The overcurrent release is a TM210 thermal-magnetic unit — fixed thermal and magnetic settings, no electronic adjustment. That keeps the part simple and reliable for standard feeder or branch protection where you don't need the selectivity curves of a electronic trip unit. It also has a trip indicator on the front, so when you're walking the line after a fault you can spot the tripped breaker without opening the panel door.
Power loss is 12 W maximum, so thermal rise in a sealed panel is manageable; just don't pack it cheek-by-jowl with other high-loss devices without checking the internal temperature.