Its breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V — figures that define the fault-current headroom for the downstream distribution board.
Thermal derating and fit
The TM240 thermal-magnetic release holds the full 250 A from 40 °C through 50 °C, then derates to 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. In a panel that sees 55 °C ambient, the breaker is good for 243.3 A continuous — not the full 250 A. Auxiliary contact version is 2 auxiliary switches HQ; the integrated shunt trip (STL) is designed with auxiliary trip order code 3VA9688-0BL32.