That TM240 designation means the thermal element is fixed at 240 A — the breaker is sized for a 240 A continuous load, not a full 250 A; the 250 A frame rating is the maximum the hardware can carry before the trip curve engages. It's a line-protection design, not a motor-protection or ground-fault version, so it's the right call for feeder circuits, distribution panels, and main disconnect duty where you need straightforward overcurrent and short-circuit protection without extra sensing. Interrupting capacity is given across five voltage levels: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. The breaker holds a full 250 A up to 50 °C; at 55 °C it drops to 243 A, at 60 °C to 237 A, at 65 °C to 230 A, and at 70 °C to 223 A.
That's one less SKU to worry about on the shelf.
IP40 front face.