The 100 A rating holds through 50 °C ambient; above that it derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C.
Short-circuit ratings step down with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 480 V (not explicitly listed but between the 440 V and 500 V entries) the curve suggests roughly 20–25 kA — still adequate for most industrial distribution. The 690 V rating at 11.9 kA is the low-end floor; if your fault current exceeds that at 690 V, this breaker isn't the right pick.
Dimensions: 130 mm height, 76.2 mm width (3 in), 70 mm depth. The 3-pole width matches standard 3-inch MCCB spacing; no special adapters needed for most DIN-rail or backplate mounting.