The front face is protected to IP40, meaning it's sealed against tools and small solids but not against moisture ingress; this is a panel-mounted device, not a washdown enclosure.
This MCCB delivers 121 kA interrupting capacity at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. For a 100 A frame, the 121 kA at 240 V is high enough for most secondary-side distribution; the 11.9 kA at 690 V still covers typical industrial motor-circuit fault levels at that voltage.
Above that, it derates linearly: 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C.
Panel fit and mechanical endurance
The 76.2 mm width is three 25.4 mm pole pitches — standard for a 3-pole MCCB in a SENTRON 3VA frame. No auxiliary contact version is fitted as shipped; no communication function, no phase failure detection, no ground fault monitoring. The undervoltage release is the only auxiliary release present.