Its TM240 thermal-magnetic trip unit provides fixed thermal and magnetic protection for line-feeder or downstream panelboard applications. The 75.6 kA interrupting rating at 240 V drops to 52.5 kA at 415 V and 32 kA at 440 V — the 415 V figure is the one that governs most European 400 V distribution panels, and at 690 V it still holds 10.5 kA, which covers most motor-circuit fault scenarios upstream of a VFD. Thermal derating is flat from 40 °C to 50 °C (40 A), then drops to 38.4 A at 55 °C and 36 A at 70 °C. The auxiliary contact version ships with two HP auxiliary switches, which is enough for a remote trip-indication and a status feedback to a PLC without adding an external aux block.
The adjustable thermal time delay tr max. is 1 second — this is the long-time delay band at maximum setting, used to coordinate with downstream branch breakers. No communication function, no phase-failure detection, no voltage trigger — this is a pure overcurrent protector, not a smart breaker.