At 240 V it interrupts faults up to 220 kA — that rating covers high-available-fault panels where a standard MCCB would weld shut. The TM240 thermal-magnetic release handles overloads with a fixed thermal curve and magnetic trip for short circuits.
Thermal derating and ambient reality
At 55 °C it drops to 62 A, at 65 °C to 60 A, and at 70 °C to 58 A. If your control room sits near a kiln or furnace line, that derating curve is what keeps the breaker from nuisance-tripping in summer.
The interrupting ratings step down with system voltage: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V.
Four-pole width means it takes up the same DIN space as a four-module unit.