The 250 A rating holds flat from 40 °C through 50 °C, then derates to 230 A at 65 °C and 225 A at 70 °C. That means in a warm panel — say 55 °C ambient — you still get 240 A of headroom, so you are not forced to oversize the frame just for thermal margin. No auxiliary contacts on this variant — the trip indicator is also absent — so if you need remote status feedback, you will add the separate auxiliary switch block later.
Breaking capacity by voltage — where it fits
The 187 kA at 240 V and 121 kA at 415 V put this MCCB in the high-interrupting category for a 250 A frame. At 500 V it still clears 75.6 kA; at 690 V it drops to 17 kA. The 3-pole format and 250 A frame mean it bolts into standard MCCB mounting footprints. Depth of 110 mm, width 138 mm, height 248 mm — check your enclosure gland plate clearance, especially if you are retrofitting into an existing panel that was dimensioned for a smaller frame.