Breaking capacity varies by system voltage: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V. That 52.5 kA figure at 240 V means it can safely clear a fault up to 52,500 symmetrical amps at that voltage — high enough for most service-entrance or feeder applications on a 240 V delta or 240/120 V center-tap system.
At 55 °C it derates to 24 A, at 65 °C to 23 A, and at 70 °C (the max operating ambient) it still carries 23 A. That's a shallow derating curve — useful in a crowded panel where internal temperature rise is a given.
Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep — a 4-inch wide body that fits standard MCCB panel cutouts. Four poles in that width means the neutral pole is switched, not just a solid link.