The interrupting ratings scale with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. That spread covers most low-voltage industrial distribution — the 121 kA at 415 V is the figure to check for European 400 V panels, while the 187 kA at 240 V suits North American 240/120 V split-phase service. Thermal derating is published per the spec: full 250 A from 40 °C through 50 °C ambient, then stepping down to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C.
Fit and Integration — Panel Dimensions and Auxiliaries
That is a standard SENTRON 3VA2 frame size — it occupies the same panel cutout as other 3VA2 3-pole units in the 250 A class. No rewiring surprise if swapping within the same frame family. It also includes an undervoltage release (UVR). The basic switch variant is order code 3VA2225-5HL32-0AA0 — the -0BL0 suffix adds the UVR and the HQ alarm switch complement.