Interrupting capacity — what those kA numbers mean for your panel
At 240 V this breaker clears 242 kA — that's a full short-circuit rating for high-fault service-entrance or distribution positions. At 415 V and 440 V it still holds 187 kA, and at 500 V it's 121 kA. These are the maximum interrupting ratings per IEC 60947-2; the actual SCCR in your assembly depends on the upstream protection coordination.
Above that it derates linearly: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C.
Physical fit — dimensions and mounting
If you're swapping in from an older SENTRON or 3VA frame, check the depth against your gland plate clearance — 86 mm is shallower than some earlier MCCBs but still needs room for the arc chute exhaust.