Derating and real-world current
Push ambient to 50 °C and it's 19 A; at 60 °C it's 18 A; at 70 °C it's 17 A. Maximum power loss is 8.5 W, which is modest for a 3-pole MCCB at this frame size.
Dimensions: 76.2 mm wide, 129.4 mm tall, 75.1 mm deep.
Interrupting ratings across voltages
Breaking capacity varies with system voltage: 65 kA at 240 V AC, 25 kA at 480 V AC, 25 kA at 480 Y/277 V, and 14 kA at 600 Y/347 V. Rated operating voltage goes to 690 V AC. That's typical for a 100 A frame MCCB — the interrupting numbers drop as voltage climbs, but 14 kA at 600 V still clears most industrial service-entrance faults.