It carries a continuous current of 100 A at 40 °C, derating to 91 A at 70 °C — the thermal-magnetic TM240 release handles overload and short-circuit response without an undervoltage or shunt trip module (no voltage trigger, no undervoltage release fitted). Breaking capacity is the headline number here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The 25 W maximum power loss is the heat the breaker dumps into the enclosure at full load — factor that into panel thermal calculations if you're packing multiple breakers in a sealed cabinet.
Physical fit and mounting
The 76.2 mm width fits Siemens SENTRON 3VA mounting bases.
What the TM240 release means for coordination
The TM240 overcurrent release is a thermal-magnetic type with a 240 A fixed magnetic pickup. That means the thermal element tracks the 100 A frame rating, while the magnetic instantaneous trip is set at 240 A — roughly 2.4x In.