It carries a breaking capacity of 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V — numbers that tell you the fault-clearing muscle at the distribution point, not just the load current.
The 250 A rating holds flat from 40 °C up to 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. At 690 V the same breaker still clears 11.9 kA, which covers most industrial 690 V distribution. The TM240 release is a thermal-magnetic type — thermal element for overload protection (time-delayed, follows I²t), magnetic element for short-circuit (instantaneous). No electronic adjustment, no communication, no ground-fault monitoring built in. It's a straightforward, field-proven design for standard feeder or main-breaker duty.
Integration notes
It ships with two auxiliary switches (HQ type) and an undervoltage release (UVR) pre-installed. The auxiliary contacts give you a remote status signal for the breaker's open/closed position.