It carries a TM240 thermal-magnetic release, meaning the thermal element tracks the load current continuously and the magnetic element trips instantaneously on a hard short.
Interrupting capacity and thermal derating
This MCCB's interrupting capacity drops as system voltage rises: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That's typical for a high-interrupting frame — the 690 V figure still covers most industrial secondary-side faults. For selectivity studies, use the 415 V value as the worst-case for 400 V class systems. Above that, derate linearly: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, 223 A at 70 °C.
Footprint is 140 mm wide, 158 mm tall, 70 mm deep. If the panel is NEMA 12 or IP54 with no forced ventilation, account for that 57 W in the thermal budget.
