At 415 V and 440 V it still holds 242 kA, dropping to 187 kA at 500 V and 7.5 kA at 690 V. The 400 A rating is flat through 50 °C; above that it derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C.
That 110 mm depth (4.33 in) is the key number for enclosure depth — it tells you whether this MCCB clears the gland plate or backplate without a spacer. Width at 138 mm (5.43 in) governs the DIN-rail or mounting-plate footprint; three poles at that width means the phase spacing is fixed. The 248 mm height (9.76 in) plus the lug/terminal projection determines the vertical clearance in the panel.
Auxiliary switching and monitoring
The trip indicator is present — a visual flag that confirms the breaker tripped on fault rather than being manually opened. Power loss at full rating is 96 W maximum, which factors into the cabinet thermal budget.
Environmental limits
The breaker is rated for indoor use in a controlled environment; no IP rating is listed, so it expects a clean, dry enclosure.