MCCB for 250 A feeder protection
Its interrupting capacity reaches 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault scenarios typical of industrial distribution panels without cascading upstream.
Above that, it derates linearly: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. For a panel with internal temperature rise near the upper limit, the effective continuous current drops — plan the load accordingly.
The 70 mm depth fits typical distribution board gutters without crowding the gland plate.